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There are 3 objectives that I proposed to achieve in this Post:

1.-To know, with the greatest precision, the potential of the plant kingdom as a whole – trees fundamentally – as a source of health and well-being.

2.-To know, as far as possible, the benefits obtained from this renewable source with respect to health and well-being, and in direct relation to the practice of human walking in open areas (outdoors).

3.-As a consequence of the knowledge of these two previous points, seek and achieve a great motivation for a greater number of people to walk and perform this activity more frequently.

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Trees, fundamental pillars of the plant kingdom, play an irreplaceable role in the sustainability of life on our planet. These majestic beings are not only silent witnesses to evolution, but also act as guardians of the health and well-being of all living things. Its ability to absorb carbon dioxide and release oxygen is essential for maintaining atmospheric balance, thus ensuring proper respiration for all creatures on Earth. The positive influence of forest resources on human health and well-being is undeniable. The diversity of tree species contributes to the creation of microclimates, improving air quality and providing cool shade. Furthermore, the presence of trees in urban and rural environments acts as a natural buffer against noise pollution and excessive solar radiation. One of the most direct and accessible benefits that trees offer is the space to walk and enjoy nature. Forest areas and wooded parks become havens of serenity where humans can escape from the urban hustle and bustle and reconnect with the primordial essence of life. The simple act of walking among trees not only promotes physical activity, but also has therapeutic effects on the mind and spirit.

Phytotherapy, the medicinal use of plants, also highlights the beneficial potential of trees. Since time immemorial, various cultures have taken advantage of the healing properties of certain tree species to treat diseases and promote health. Forests, in this sense, are authentic natural medicine cabinets that house a green pharmacy of great value.

The importance of preserving and sustainably managing forest resources becomes a collective responsibility. Uncontrolled deforestation threatens the very basis of our existence, endangering global health and environmental balance. Recognizing the potential that trees offer as a source of health and well-being is essential to ensuring a harmonious future for all forms of life on our planet.

Trees are not only witnesses of history, but are active architects of planetary well-being. Its presence reverberates in every corner of the globe, sustaining life and offering a constant reminder of the interconnection between nature and human health. Walking among trees is not only an aesthetic pleasure, but also an act of gratitude towards the inexhaustible source of benefits that these wonderful beings generously provide us.

1.-POTENTIAL OF EXISTING FOREST RESOURCES

A.-Geographic data of the Earth:

Total surface area of the globe: 197 million square miles, equivalent to 510 million square kilometers = 51,023 million hectares.

Area covered with water: 139 million square miles.

Land area: 58 million square miles.

World population: 8,000 million inhabitants

B.-The vegetal genus as a whole, that is on the terrestrial surface, excluding the one that is located in the waters, has the following power:

The surface of forests represents 27% (4,060/15,000 x 100) with respect to the total terrestrial surface.

The forest area destined for recreation is 4.6% (186/4,060 x 100) with respect to the total forest area.

Density per inhabitant:

– The density is 0.023 hectares of forest designated for recreation per inhabitant (186/8,000), equivalent to 230 square meters per person.

– The world’s population has, on average, half a hectare of forest per inhabitant (4,060/8,000), equivalent to 5,000 square meters.

C.-Requirements

How many hectares of forest are required per inhabitant for recreation?

How many hectares of forest are biologically required per inhabitant?

In order to try to answer the above questions, greater efforts will have to be made in the future to determine them; however, let us proceed to quantify what, in this era, the plant kingdom -forest resources- is generating for the benefit of mankind. Let us first analyze what power a tree requires to raise its sap from its roots to the top at its highest points.

The main parts of a tree:

Considering a tree 10 meters high, from its base to the highest point, plus 1 meter of depth -on average- of its roots:

H = height = 11 meters

The mass that this type of tree moves in 24 hours amounts to 0.09 m3. Although sap has a higher viscosity than water, we will consider that this measure represents 90 kilograms, and of these we only consider the 8.5% that the tree moves to the specialized parts – leaves, branches, stems and trunk – to transpire and release it to its environment.

M = mass of sap = 0.007650 m3 = 7.65 kg.

The power required daily for a 10 meter high tree to spread part of its nutrients to its environment is 0.019 HP (13.76 watts).

Globally, the plant kingdom spreads 4.73 Kg / Hectare, so that the global spreading reaches 4.73 x 4,060 Million = 19.2 million tons of nutrients, equivalent to 2.4 Kg/inhabitant.

Globally, in one day vegetation generates a power of 0.006 HP/Hectare, or 0.006 x 4,060 million = 24.36 million HP, equivalent to 18,100 million Watts, in one day.

2.-RECEIVING ENERGY FROM TREES

Let’s see what it means to walk among the trees and how we receive their energy.

When I walk in a forest, either through gaps or on accessible trails, the walk impacts me in a different way. I suppose that the trees give off some odors, gases and certain particles invisible to our eyes, which impact our body (physical and mental) and generate a more pleasant and comfortable state. Of course, they must be impacts of different types on the organism that increase creativity and cognitive functions. As if the trees around us, when we walk, introduce their effluvia into our thoughts and physical bodies.

Of course I do not have a formula to prove this, however, I am fully sure of all this, because I have always experienced these effects in my person when I walk through the trees of a park or a forest. It would be necessary to investigate more thoroughly and with greater rigor these aspects that are generated when walking inside a forest, when we see ourselves surrounded by trees and plants.

All my senses – external and internal – are impacted: smell, sight, touch (all our skin), hearing, even the gustatory sense, as well as the also called spiritual senses (Orientation, Spatial, Common Sense, Intuition, Memory, Perception, Cognitive, Imagination, Fantasy, Muscular, Movement, Temporal, Proportions, Aesthetic): Post WALKING AND THE CARDINAL POINTS and future Post THE WALKING AND THE EXTERNAL AND INTERNAL SENSES), are put to work in a more intense way when I go for a walk immersed among the trees of a forest or a park.

“A peripatetic individual means one who wanders around an atrium, park, courtyard or promenade. It was probably derived from the word “peripatos” which was used to designate a “covered walkway or path”. It may come from “peripatoi” which is how the covered portals of the Lyceum were designated; but this word was also used to designate the habit that Aristotle had of walking under the fronds of the trees while reading”.

Probably Aristotle and other people did know about what trees emanated, that is why they used to walk under their shade.

I reiterate: I have no doubt about these major effects that are generated and occur in my body every time I walk in places where the density of trees and plants is high.

Some time ago I realized that the grass and plants in my garden, when I watered them with water from the municipal intake, did not grow or flower in the same way as with rainwater. Surely trees produce and release particles and gases, which the wind incorporates into the clouds, carrying a great diversity of nutrients (natural and chemical?), which in turn precipitate to the earth integrated with rain. Thus, in this way, all beings in the plant kingdom are naturally fertilized. The same surely happens with the animal world, including the human being, but we have not yet discovered it or assimilated it, much less taken advantage of it. In the Post WALKING IN THE RAIN. PART I, I recommend walking in the rain, expressing the following: Although I have occasionally experienced walking with some rain during the day, and also at night with “rain in the form of dew”, I do not have many conscious experiences on this under walk the rain. Everything indicates that I should take more into account this uniqueness of walking, under the circumstances of doing it in the rain. So, I will begin to investigate this but above all I will experience the different options of walking in the rain, and regardless of this, I invite you to experience it immediately and let’s give it more strength and power, through this absorption of energy through contact from our body with the rain, to the mind and spirit. […]We will have to experience it to know what direct repercussions (real and obvious) rain has on the body, the sensations it provokes, how our senses respond, and what are the mental and emotional effects  (levels of satisfaction and well-being) that a short walk in the rain generates. It is something that we do not usually do, let’s go for a walk one day with a light drizzle.

Since that date when I published this Post I have been researching about it, and it has taken me to several scenarios, one of them is this one, that of the trees.

In a synthetic way I have been able to discover in various information sources that trees:

1. They have their own way of walking, although they are always fixed in the same place, since they sprout from some seed (Future Post WHY DO TREES AND PLANTS NOT WALK?

2. Trees are shared, they do not compete with each other.

3. Trees are in constant communication with each other, of the same and different species, to alert themselves to external harmful factors (physical environment, animals, insects, etc.).

4. Their roots are the superior mechanism of order and functioning of trees.

5. The leaves are the engines that deliver the nutrients that they self-produce.

6. Your most important allies are fungi in all their varieties and sizes, macroscopic and microscopic.

7. They have their own way of breathing, and every time they do so they support life throughout the planet, several tens of thousands of kilometers from their place where they are settled.

8. They have their own way of thinking, but they do it only to help the beings that are in their own space.

9. They have their own way of walking and they do it for the benefit of the rest of the creatures that surround them.

10. They have their own circulatory system and only tend to share and not compete with beings of their own species.

11. They have their own memory system that allows them to always keep in mind those aspects that are beneficial to their species, as well as those that are harmful.

SHARE, DON’T COMPETE

The formula of the trees is one that has been mentioned since ancient times, but it seems that we are deaf: Share, NOT compete, Collaborate, NOT compete; However, the ancient Greeks began to try to erase that formula from our minds, that of cooperating (Posts PLAY AND WALK-PART I. NO TO COMPETITION, YES TO FUN; GAME AND THE WALK-RWD SYSTEM-PART II. NO TO COMPETITION, YES TO FUN).

The plant kingdom is cooperative by nature. The word “vegetable” is sometimes used in a pejorative way: “it is a vegetable” it is said, trying to mean that it does not move, that it does not act, that it does not perform. However, at a planetary level, it may be – after water – the one that plays the most role in revitalizing life on earth, and for human beings to continue existing.

The word vegetable comes from the Latin vegetabilis, vegetalis which means to grow; which are beings capable of germinating, developing and multiplying. This also for the animal kingdom; However, perhaps in vegetables the word multiply is so strong that it provides a more universal force that radiates to the rest of the terrestrial entities, and even more so to each other.

Let’s discuss a case of help between the trees themselves through their roots.

If we analyzed from the point of view of “stability” of the bodies, we could find a relationship between their height, trunk (thickness) and roots (length, extension and depth).

Schematically we can illustrate this with the following figures:

Larger roots generate trees with greater heights

There are some species of trees that are strengthened by the network of their roots, thereby increasing their support; which allows them to grow to greater heights.

It is known of certain species in forests and jungles that if they existed in isolation, they would not grow beyond a third of the height they reach, since their roots would not support them at a greater height. For this reason, they develop in communities of the same species, helping each other – a collaboration of roots: radical network – because their roots intertwine, forming a network such that they expand their support of stability at their base, although their roots are not very extensive nor very deep.

Intertwining their roots generates mutual help in various orders; and one of them is that the trees manage to grow taller.

This reciprocal collaboration can be observed in the network of roots, where the support base expands to considerable lengths, depending on the area of germination (gestation, sprout) because the distances between one individual and another are generally very short. , since they are very close to each other, as if they were accommodated under a planned system, in time and according to their own developments.

Small roots: small trees, large roots: large trees. Exception that is made when some species collaborate with each other to sustain themselves better, even if they have little root development, since they create radial platforms that increase their stability, so they reach great heights, which they would not be able to achieve otherwise.

They communicate with each other, to share and help each other in other aspects as well. They use an information mechanism through their root connections: an important underground root network. They help each other in terms of the threats they have from aggressive elements of different types and from exchanging substances. In this feeding scenario, fungi and bacteria found in the subsoil intervene, carrying out a symbiosis between all of them that mutually feed each other; the fungi and bacteria feed the plants and these feed both organisms, a complete and integral system.

This reciprocal help is also achieved between the same trees of the same species and between individuals of different species.

PROPAGATION OF THE SPECIES

One of the functions that the animal pursues in general, when it walks, is to propagate its species, being that it seeks its food, shelter, its partner, etc., to survive and this is the first step to achieve its permanence on earth and manage to transcend his species.

The tree – and almost one hundred percent of any other plant species -, to achieve its propagation, performs any of the following 2 functions. One of them is to produce its seeds and spread them on the earth, either close to it, or with the help of the wind, it projects them hundreds or thousands of kilometers from its permanent site. The same thing happens – on a smaller scale – relying on water, whether by large or small water currents, or rainwater that carries it away from the primary environment. The other range of actions is to let one of its branches fall to the ground, either by detaching a young stem from its main body (cutting) or just letting it bend to make contact with the earth (layering) and leaving it to take root, giving birth and thus developing a new plant of the same species.

Perhaps its path to propagate is very slow, but it does carry it out in its own way, in the way I have described.

POWER AND NUTRIENT PROCESSING

Now, let’s see how much energy is generated when we walk.

The energy that is generated by vegetation in one day – as we already saw – amounts to 24.36 million HP, equivalent to 18.1 billion Watts, in one day. Now, if all human beings walked every day, for one hour, in the world, they would generate 1.89% of that energy.

Transpiration of plants is the vital moment in which they begin to spread, transfer and transmit their nutrients. Surely this point represents, from your entire process of generating your self-nourishment, the elimination of excesses or waste that have allowed you to feed yourself over a period of time.

This transpiration reaches 0.004729911 m3/hectare/day, which on a global scale represents an emulsion of 4,060,000,000 x 0.004729911 = 19.2 million cubic meters that are spread in the Earth’s atmosphere by plant transpiration every day.

The following table shows the power exerted by both the trees and the feet of a human being, normally during their life. A comparison that allows us to notice the great potential that is hidden from our eyes, but that is realized every day in our living environment.

According to the data in the previous table, what FORCE our feet produce in their walking performance, when combined with the rest of the elements of the lower extremities, to produce a power of 9 Watts or 0.012 HP, it is required to walk 30.45 Kilometers or 18.91 Miles to perform equal to a water pump for 60 seconds of work. A tree 27.5 meters high produces the same power for 9.45 days of its life. This tree lives 30 years on average, so it can perform this operation 1,158 times throughout its life, releasing its beneficial substances into its environment.

NUTRIENT DISPERSION

A) THE WIND AND THE AIR

The capacity that trees have to raise all those substances that they process – RED ARROW – is pointed out, taking them from the ground through their roots and from the environment with their leaves, trunks and stems, to the highest parts of them, and they are the leaves. by which, once processed, they dislodge them to the outside environment, disseminating them to places – with the help of air and wind – up to hundreds of kilometers away from their permanent site.

It is not necessary to calculate the capacity of the wind to drag these particles away from the immediate environments where the tree is located, a movement that manages to place them tens, and sometimes thousands of kilometers away; likewise, the capacity observed in the atmosphere that allows these essential compounds to be suspended in the air for hours, days and months, due to the same characteristics and properties of these particles. Capacity that the wind has by itself and also helped by the seas and oceans.

A) WATER AND RAIN

We expressed in a previous Post: “We must experience it to know what direct repercussions (real and obvious) rain has on the body, the sensations it provokes, how our senses respond, and what the mental and emotional effects are (levels of satisfaction and well-being). ) which generates a short walk in the rain. It is something that we do not usually do, let’s go for a walk one day with a light drizzle” (Post WALKING IN THE RAIN. PART I).

It is normal for rain to contain part of those substances that trees constantly disseminate, which is why we can receive them through this hydrophilic medium.

We also express in the Post WALKING BAREFOOT. PART I: “It is advisable to lie down for a few minutes on your back and also facing the ground; and then roll on it, taking care not to hurt yourself, doing it carefully and slowly; appropriate clothing. The more direct contact we make, during our walks, with our ‘earth’, the more the energy flows within us. I invite you to walk barefoot from time to time and let us give energy and power, through this absorption of ‘energetic sap’ through the contact of our feet with the ground, to our entire body, mind and spirit.” He recommended contact with the earth, and now also with rainwater, to receive that ‘energetic sap’.

Water currents contain part of these nutrients. In addition, we also know that there are water sources where they contain certain components beneficial to health, and that they also contain some substances from the subsoil.

It is common to find advertisements where they offer or recommend treatments based on certain muds that contain miraculous substances, and surely they are composed of these “energy saps” coming from both the plant kingdom (organic) and the mineral kingdom (inorganic).

We have explained the beneficial impact that the Plant Kingdom has on the health and well-being of human beings when they walk outdoors in this second section, however, there are other benefits that I have pointed out in countless Posts for 5 years.

3.-INDUCTION AND MOTIVATION SO THAT MORE PEOPLE WALK AND DO THIS ACTIVITY MORE FREQUENTLY.

I hope that with my calculations about the potential of the Plant Kingdom and the benefits that it transmits to each of the human beings, I have managed to motivate them to go for a walk today and forever.

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A few words about what light means in our lives.

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The main source that generates light for us is the Sun. The Sun emits several types of rays. The most important are:

1.-Ultraviolet (UV) rays. These are emitted by the sun in different wavelengths, including UVA, UVB and UVC. These rays have benefits and detriments for living beings.

Benefits of UV rays:

– Vitamin D: Exposure to UVB radiation allows the skin to produce vitamin D, essential for bone health.

– Circadian rhythm regulation: Sunlight, which includes UV rays, helps regulate the circadian rhythm and improves mood and sleep quality.

Harm from UV rays:

– Sunburn: Excessive exposure to UVB rays can cause painful sunburn on the skin.

– Skin damage: UVA and UVB radiation can damage the skin, causing premature ageing and increasing the risk of skin cancer.

– Eye damage: Prolonged exposure to UV rays can damage the eyes and increase the risk of cataracts and other eye problems.

2.-Infrared (IR) rays: Infrared rays are a form of thermal radiation emitted by the sun.

Benefits of infrared rays:

– Warmth: Infrared rays provide warmth, which is essential for maintaining the Earth’s temperature and the well-being of living things.

Harm of infrared rays:

– Overheating: Excessive exposure to infrared rays can cause overheating and dehydration in living beings.

Solar radiation, in general terms, including UV and infrared rays, has essential benefits such as vitamin D production and circadian rhythm regulation, but it can also cause damage to the skin, eyes and increased risk of disease. It is important to take precautions, such as wearing sunscreen and sunglasses, to minimize the harmful effects of solar radiation and to reap its benefits safely.

Let’s talk about the differences between sunlight and artificial light, in all its varieties.

Sunlight and artificial light are sources of illumination that have several important differences in terms of their origin, characteristics and effects.

Some of their significant differences are as follows:

Differences in their origin:

Sunlight. It comes from the sun and is a natural light source. It contains a wide range of colors and wavelengths, including ultraviolet (UV), visible and infrared.

Artificial light. This is generated by human-made devices, such as light bulbs, fluorescent tubes, LED lamps, etc. It can be produced using different technologies and energy sources, such as electricity, gas, or chemicals.

Differences in spectral composition:

Sunlight. It contains the entire spectrum of visible colors, which makes it suitable for color perception and plant photosynthesis. It also emits ultraviolet (UV) and infrared rays.

Artificial light. This varies according to the source. For example, incandescent bulbs tend to be warmer and yellower, while fluorescent and LED lamps can be adjusted to produce different color temperatures, from warm to cool light.

Differences in intensity and dimming:

Sunlight. The intensity of sunlight varies throughout the day and depends on factors such as geographical location, climate and time of day. It cannot be regulated directly.

Artificial light. The intensity of artificial light can be easily controlled by switches, dimmers and programming. This allows the lighting to be adjusted according to specific needs.

Differences in duration:

Sunlight. The availability of natural sunlight is limited to daylight hours and varies according to season and geographical location.

Artificial light. Artificial light is available throughout the day and night, making it useful for illuminating spaces at any time.

Differences in energy efficiency:

Sunlight. This is energy efficient, as it does not require additional energy consumption.

Artificial light. Its energy efficiency depends on the type of source and technology used. LED lights, for example, are known to be very efficient compared to incandescent bulbs.

Sunlight is a natural light source that contains the full spectrum of colors. In contrast, artificial light is generated by artificial devices, can vary in spectral composition and is dimmable. Both sources have important applications in everyday life and in the illumination of spaces, each with its own advantages and disadvantages.

All indications are that we should regularly sunbathe.

Now let us see how beneficial it is to WALK outdoors under the sun’s rays and how long it is advisable to walk outdoors without harm, as well as the care that should be taken when walking in the sun.

Walking outdoors in the sun can be beneficial to your health, but it is important to take precautions to avoid damage from excessive sun exposure.

GENERAL RECOMMENDATIONS.

Appropriate times:

Walking outdoors should be avoided during the hours of highest solar intensity, which are usually between 10 am and 4 pm. Instead, opt for walking in the early morning or late afternoon, when the sun’s rays are less intense.

Duration:

The amount of time you can safely walk in the sun depends on several factors, such as geographical location, skin type and intensity of solar radiation. As a general rule, it is not recommended to be out in the sun for long periods without protection, especially at peak hours. You can start with short walks, 15-30 minutes, and gradually increase the duration.

Sunscreen:

If you are scheduled to walk during the day, sunscreen should be used on all exposed areas of the skin, even on cloudy days. Use a broad-spectrum sunscreen with a sun protection factor (SPF) appropriate for your skin type. Reapply sunscreen every two hours or after sweating (Future Post WALKING AND SWEATING) or swimming.

Appropriate clothing:

Clothing that covers the skin should be worn, such as long-sleeved shirts, long trousers and a wide-brimmed hat to protect the face and neck. Look for clothing with ultraviolet protection factor (UPF) if you are in a very sunny environment.

Sunglasses:

Wear sunglasses that block UVA and UVB rays to protect your eyes from the sun’s radiation.

Hydration:

Carry enough water on every walk and stay well hydrated while walking, especially in hot climates. Sun exposure can increase fluid loss through perspiration (Future Post WALKING AND PERSPIRATION).

Shade:

Seek shaded areas or plan walking routes that include natural shadows, such as trees (Parks or forests) or buildings (city), to reduce direct sun exposure.

Listen to the body (Posts BODY PARTS FOR WALKING – THEIR CARE; LISTENING TO OUR BODY WHILE WALKING-BODY LANGUAGE):

Pay close attention to the body’s signals. If you feel excessively hot, dizzy, fatigued or reddened skin, seek shelter and rest.

Walking outdoors in the sun is healthy, but it is essential to take measures to protect yourself from the harmful effects of solar radiation. Scheduling walking times conveniently, using sunscreen, wearing appropriate clothing and staying hydrated are all essential precautions to enjoy walking without being harmed by exposure to the sun.

The sun’s rays and daylight are closely related to circadian rhythms (Post THE WALK AND CIRCADIAN RHYTHMS-PART I; Future Post WALKING AT NIGHT. CIRCADIAN EFFECTS), which are the natural patterns of activity and rest that regulate the sleep-wake cycle and other biological functions. Exposure to daylight, particularly sunlight, plays a key role in regulating these rhythms.

Highlights of circadian rhythms that we should be aware of and take into account:

Light as an environmental signal: The circadian system of living beings, including humans, is influenced by environmental signals, light being one of the most important. Light acts as a key signal that informs the body about the time of day and night.

Regulation of the biological clock: In the brain, there is a structure called the suprachiasmatic nucleus (SCN) that acts as the “master clock” of the circadian system. This nucleus is located in the hypothalamus and receives information from light via the photosensitive retinal cells in the eyes.

Light and melatonin production: Exposure to light, especially sunlight during the day, inhibits the production of melatonin, a hormone that promotes sleep. Daylight, rich in blue light, signals the body that it is time to be awake and alert.

Regulation of sleep and wakefulness patterns: Exposure to sunlight during the day helps keep circadian rhythms aligned with the planet’s 24-hour cycle. This helps regulate sleep and wakefulness patterns, promoting restful sleep at night and alertness during the day.

Influence on mood and well-being: Sunlight also has an impact on mood and well-being. Exposure to natural light during the day can increase the production of serotonin, a neurotransmitter related to feelings of happiness and well-being.

Sleep disorders: Lack of adequate exposure to daylight, as occurs in night workers or people who spend long periods indoors without natural light, can desynchronise circadian rhythms and contribute to sleep disorders and health problems.

In short, sunlight and daylight are essential for regulating our circadian rhythms, which affects the quality of sleep, mood and overall functioning of the body. Exposure to sunlight during the day is important for maintaining a healthy biological clock and a balance between sleep and wakefulness.

Let’s look at some situations that we must take into account with the SHADOW:

Shade plays an important role in people’s health and well-being, and its relationship with sun exposure is crucial to understanding its effects. The following explains aspects related to shadow and its influence on health:

Benefits of shade:

Protection against solar radiation: The shade provides protection against direct solar radiation, including ultraviolet (UV) rays that can damage the skin and eyes (Post THE SENSE OF SIGHT AND THE WALK-RWD SYSTEM; Future Post WALKING AND THE EXTERNAL AND INTERNAL SENSES). Staying in the shade is an effective way to reduce the risk of sunburn and premature skin aging, as well as the risk of developing skin cancer.

Temperature regulation: Shade provides shelter from the sun’s heat and infrared radiation, helping to prevent overheating and dehydration. This is especially important in hot climates.

Rest and relaxation: The shade provides a comfortable and cool space to rest, relax and protect yourself from excessive heat.

Shade considerations:

Balanced exposure: While shade is beneficial for protection from the sun, it is important to find a balance. Limited sun exposure is necessary for the synthesis of vitamin D in the skin, which is essential for bone and general health. Therefore, it is not advisable to always remain in the shade.

Hygiene and mental health: Adequate sun exposure is also important for mental health. Sunlight, particularly daylight, helps regulate circadian rhythms, improving mood and sleep quality. Spending time outdoors and enjoying natural light is beneficial for emotional well-being.

Additional Protection: Despite being in the shade, it is important to continue using sunscreen and protect your eyes with sunglasses, especially in areas with strong sunlight. Solar radiation can reflect off surfaces, such as water and sand, meaning that even in the shade, some UV radiation can reach the skin.

In short, shade is beneficial to health by providing protection from direct solar radiation and helping to regulate body temperature. However, it is important to find a balance and allow limited sun exposure for benefits such as vitamin D synthesis and regulation of circadian rhythms. The use of sunscreen and other care is still important even when you are in the shade in a sunny environment.

THE WALK-RWD SYSTEM

We have explained throughout the Blog, in the vast majority of the Posts, the great advantages that the WALK-RWD System has when practicing its 4 structured activities, considering that WALKING is the most important.

Receiving daylight, and not necessarily the direct rays of the Sun, also has all the advantages that we have mentioned in the previous paragraphs. Walking in daylight is not the same as walking inside the house or other covered spaces; although we have explained the advantages of walking at night as well (Posts THE WALK AND CIRCADIAN RHYTHMS-PART I; WALKING THROUGH STREET FORESHORTENINGS; Future Posts WALKING AT NIGHT. CIRCADIAN EFFECTS and THE WALK-RWD SYSTEM, ACCORDING TO THE TIME OF DAY AND NIGHT), so it is very convenient to schedule walks according to our free time (Free time: Post THE PROPER MANAGEMENT OF “SLACK TIME” IN THE DECISION TO WALK), to our own needs and characteristics, during the day (the most!) and at night (the least!).

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Stretching is a muscle stretching practice that is performed with the aim of improving flexibility and range of motion in the joints. It is based on the idea that stretching muscles on a regular basis can help keep them flexible and relieve muscle tension. Stretching is done in a controlled and sustained manner to allow the muscles to stretch and relax (Future Post WALKING AND THE 600 MUSCLES OF OUR BODY).

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Stretching or elongation is a type of exercise that is performed slowly, steadily, precisely and continuously. It is performed through flexion, extension or rotation movements in the back, neck, legs, arms, hips, as well as feet and hands.

This practice is proposed while walking. The main “stretching” elongates that are achieved by walking, are performed on the lower limbs (the most) and on the upper limbs (the least), all of which are performed naturally while walking.

They are recommended for people of all ages, but technique and intensity vary according to age and physical condition. It can be started from an early age, but techniques suitable for children and adolescents should be used. It is always advisable to consult a health professional or trainer before beginning a stretching program, especially if you have an injury or physical condition.

Stretching has several purposes and benefits:

– It improves flexibility and range of motion.

– It relieves muscle tension and reduces the risk of muscle injury.

– It promotes proper posture and relieves stiffness.

– It can improve blood circulation.

– It can aid in relaxation and stress reduction.

Physical Conditions and Ages:

Stretching is suitable for people of different fitness levels. Stretching routines – while walking – can be adapted to individual needs. However, special precautions should be taken for people with muscle or joint injuries, and those with specific medical conditions. In terms of ages, it can be practiced from infancy to old age, with exercises adapted to each stage of life.

Disadvantages:

Stretching done badly or in excess can lead to muscle or joint injuries. It is important not to force stretching and to do it gradually. It may also not be suitable for people with certain physical conditions, such as herniated discs or severe joint problems, without proper supervision.

Physical Positions:

There are different types of stretches, including static (holding a stretching position for a period of time) and dynamic (controlled, repetitive movements). Physical positions vary depending on the type of stretch, but typically include positions such as “cat-camel”, leg and arm stretches, among others.

Frequency:

The frequency of stretching exercises can vary, but it is recommended to perform them regularly, at least a few times a week. It is important not to force stretching and to listen to the body to avoid injury (Post LISTENING TO OUR BODY WHILE WE WALK-BODY LANGUAGE). The important thing is to listen to our body to give attention to those parts that we use less or openly do not use.

Relationship with walking and other exercises:

It is advisable to perform it before going for a walk, although it is not essential, since to a large extent walking is an exercise that achieves similar effects to stretching. In the future post STRETCHING OF THE LEGS THROUGH WALKING. THE STRETCHING, we present these relations. It ca

n also be complemented by other exercises, such as Tai Chi, Yoga or Pilates, which also emphasize flexibility and mobility. In addition, it can be beneficial as part of a more comprehensive exercise routine that includes cardio and strength training.

Body Parts Benefited:

The effect achieved is on muscles, joints, ligaments, tendons, nerves, and other parts of the body.

Stretching can benefit multiple parts of the body, including the muscles of the legs, back, shoulders, neck and arms. It can also improve the flexibility of joints, such as knees, elbows, wrists, ankles, shoulders, etc.

Muscles and Bones:

Stretching primarily benefits muscles by improving their flexibility and relieving tension. It can also have a positive side effect on bones, as improved joint mobility can help maintain bone health over time. However, it is not a specific bone-strengthening activity.

In summary, stretching is a versatile practice in itself that can be adapted to different ages and fitness levels. When performed correctly and with caution, it can improve flexibility, relieve muscle tension and promote better joint mobility in a variety of body parts. However, as mentioned, walking is an exercise that achieves identical effects to stretching, so let’s not waste any more time, let’s go for a walk.

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All perception of truth is the detection

of an analogy. THOREAU

This is an extension of Post WALKING WITH UNCHAINED PROMETHEUS,WALKING WITH UNCHAINED PROMETHEUS which is continued by the following.

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Prometheus in the Caucasus, experienced terrible moments when every day that vulture devoured his entrails: “Both actions were performed by Prometheus without the permission of Zeus, for which he did not forgive him and punished him by asking Hephaestus (God of Fire, Vulcan) to make unbreakable chains and fasten him with them to the highest part of the Elbruz Volcano. […] Prometheus thus chained on that peak of the Caucasus awaited a vulture, which during the day attacked him, devouring his liver, and whose heart-rending suffering was repeated, for at night it regenerated again, completely replacing all his entrails during the night period, so that the torture became eternal. Fire and agony, daily” (Post WALKING WITH UNCHAINED PROMETHEUS).

PROMETHEUS AT ELBRUZ VOLCANO

Sigmund Freud resorted to some characters from Greek Mythology to represent and exemplify certain desires (inclinations and appetites), rejections (repulsions, aversions, antipathies, contempt, disaffections, detachments and indifferences) and psychological ailments (depressions, attachments, affections and predispositions) of the human being.

Freud’s use of these symbolic characters from the Greek myths – as presented in various dramatic works of Hellenistic antiquity – allowed him to explain some of the recurrent psychological disturbances of the human condition and to give him a basis for the elaboration of his psychoanalytic theory.

We will use the Myth of Prometheus to represent the discomforts and disorders, both physical and psychological, generated by the COVID in patients, and fundamentally in the neurocognitive field.

We have selected COVID to apply in this analogy (simile), because of its characteristics and its symptomatology of psychological ailments (traumatic repercussions) but also because it was suffered by a large number of people worldwide, in a short period of time; it was very representative of what these affected people were suffering daily for several weeks and even months, very similar to the passage experienced by the demigod.

Some of the symptoms that were manifested by the COVID contagion in the patients every day were magnified at a certain time (from 4-6 p.m.), such as a rise in body temperature, body ailments, headaches, etc., which generated trauma, which lasted for several weeks (some patients for several months). It should also be noted that the physical and psychological damage caused by this virus manifested itself recurrently in a large number of patients, just as Prometheus experienced it, hence the simile with this mythological character.

The analogy between the myth of Prometheus and the neurocognitive traumas affecting human beings can be established in various aspects and categories; although it is important to remember that this is a metaphor and not a precise psychological interpretation.

Simply put, Prometheus is a psychological referent(*) to the traumas and neurocognitive disorders from which human beings commonly suffer.

Connection between the myth of Prometheus and neurocognitive traumas:

1.            Prometheus’ perpetual punishment and the persistence of trauma: In the myth, Prometheus is condemned to eternal punishment, where a vulture returns every day to devour his entrails. This could symbolize the persistent nature of the emotional and cognitive traumas that some people experience. Just as Prometheus continued to suffer day after day, many people who have experienced a traumatic event may feel that their painful memories and emotions return again and again.

2.            Prometheus’ immobilization and the feeling of being trapped: Prometheus was chained to a mountain, which made him unable to move or escape from his suffering. This could relate to the sense of paralysis that some people experience as a result of trauma. When someone suffers trauma, they may feel trapped in their negative emotions and intrusive thoughts, which hinders their ability to move forward in life (Post AUTOLIBERATION OF NEGATIVE EMOTIONS THROUGH SELF-SUGGESTIONABILITY).

3.            Prometheus’ constant agony and the lingering discomfort of trauma: The vulture that returns daily to devour Prometheus’ entrails represents an ongoing agony. Similarly, people who suffer from recurrent trauma may feel constant emotional and psychological discomfort, as memories and emotions related to the trauma continue to affect them.

4.            The intervention of Zeus and the role of the mind: In the myth, Zeus is the one who condemns Prometheus to punishment. In the analogy, Zeus could represent the mind of the traumatized individual, which can sometimes contribute to the perpetuation of the trauma through negative thoughts, self-blame and constant ruminations on the traumatic event.

Keep in mind that neurocognitive trauma is a very complex issue and contains multidimensional psychological aspects – dealt with by the science of psychology – so that each individual experiences and processes trauma in a unique way. Furthermore, the process of recovery from trauma involves specific therapeutic competencies (practices, skills) to address persistent suffering and enable healing. However, it is important to note that this analogy, although a simplified form, allows us a metaphorical interpretation of the relationship between the Prometheus myth and neurocognitive trauma.

In this sense, we can define another analogy between the liberation of Prometheus from his chains and the healing process of patients who have experienced psychological trauma and have been neurologically affected. In the following, we express this analogy:

Connection between the liberation of Prometheus and the healing of neurocognitive trauma:

1.            Hephaestus’ intervention and therapeutic support: In the myth, Hephaestus wishes to intervene to free Prometheus from his chains. This can be compared to the therapeutic support that traumatized patients receive from mental health professionals, such as psychologists or psychiatrists. These experts play a key role in helping people to break free from the ‘chains’ of their trauma by providing therapeutic techniques and tools that enable them to address and process their traumatic experiences.

2.            The process of gradual release: In the myth, Prometheus’ release does not occur instantaneously, but is a gradual process. Similarly, healing from neurocognitive trauma is a process that takes time and effort. Patients work with the therapist to identify and understand their traumatic experiences, confront their fears and challenge negative beliefs they may have developed as a result of the trauma.

3.            Regaining freedom and empowerment: When Prometheus is freed from his chains, he regains his freedom. Similarly, individuals overcoming neurocognitive trauma may feel a sense of empowerment and recovery in their lives. As they move through their therapeutic process, they may find a greater sense of control over their thoughts, emotions and behaviors, and thus begin to rebuild their lives in a healthier and more positive way.

4.            Ongoing support: Although Prometheus is freed from his chains, the myth does not end there; his story continues. Similarly, healing from trauma does not always mean that memories and pain disappear completely, but through ongoing support and coping strategies learned in therapy, individuals can learn to live healthier and more resilient lives (Post THE WALK-RWD SYSTEM IS AN EFFECTIVE METHOD OF RESILIENCE), even if the trauma remains part of their future existence (existential story).

The liberation of Prometheus from his chains can be metaphorically compared to the healing process of a neurocognitive trauma, where therapeutic intervention, time and effort contribute to restoring the freedom and emotional well-being of the affected person.

Thus, we can differentiate what Prometheus did personally to free himself in relation to the possibility of a patient’s self-healing through the activities suggested by the WALK-RWD system and fundamentally with the walks in the open air.

Connection between Prometheus’ self-liberation and self-healing through walking outdoors:

1.            Prometheus’ personal initiative: In the myth, Prometheus did not wait passively for his release; he managed to persuade Hephaestus to release him. This could relate to the idea that traumatized individuals can also take personal initiative in their self-healing process. The decision to take walks outdoors in nature, for example, maybe a personal choice that reflects an active desire to heal and find relief in a natural environment.

2.            Zeus’ command: On the other hand, Zeus finally orders Hephaestus to release Prometheus. This could be compared to the idea that sometimes, in the process of self-healing, people voluntarily and consciously seek outside support or recommendations from mental health professionals or loved ones who act as a “command” to take steps toward recovery. For example, a therapist might suggest outdoor activities as part of a therapeutic approach.

3.            Outdoor walking as a pathway to self-healing: Outdoor walks can be an effective tool for self-healing for traumatized patients. These walks can provide a space for reflection, relaxation and connection with nature, which can help reduce anxiety and stress associated with trauma. In addition, physical exercise can release endorphins, which contributes to emotional well-being.

4.            Continuity of self-healing: Just as Prometheus did not free himself from chains once and forever, but rather his process continued, outdoor walking and other self-healing strategies must be consistent and sustained over time to be effective. Self-healing can be a gradual and continuous process in which the individual takes an active role in his or her own recovery.

The story of Prometheus and his liberation, both on his own initiative and at the command of Zeus, can offer valuable insight into the possibility of self-healing for traumatized patients through activities such as walking outdoors, among other actions. Personal initiative, combined with external support when necessary, can be an effective path to recovery and well-being.

It has been reliably established that COVID generated harmful effects of a neurocognitive nature, i.e. a neurological affectation that has repercussions on various brain functions, such as memory loss, fears that are indefinable as to their origin, extraordinary anguish, anxieties, what is commonly called post-traumatic stress, as well as mood disorientation, psychic disorders, confusion and loss of identity, and even the loss of enjoyment of life.

Let us keep in mind that Prometheus’ condition of recurrent suffering defines the psychological state of being. Thus, we can say that the neurocognitive symptoms generated by COVID were a psychological ascendant (**) of the myth of Prometheus; that is, the vulture that returned to devour his entrails is an analogy with those periodic neurological afflictions and other physical ailments, and in this case Prometheus in chains, although he was released from the chains that held him, he was not completely liberated.

With the same character, we can relate Prometheus – to be considered in a general way, not only because of COVID – to the traumatic effect that is generated by negative actions that the human being can receive in an excessive number or enough times to become a traumatic shock. A periodic emotional shock that produces lasting trauma in the mind. How long? This is where the myth of Prometheus with his walking takes on its function.

Just as Freud has pointed out that part of the human condition that is a psychological ancestor of the Oedipus Myth, so too some neurocognitive traumas that human beings have lived through and will continue to live through are psychological ancestors of the Prometheus Myth. Surely Aeschylus was aware of this psychological influence.

Finally, we should think: How does Prometheus free himself from his chains? What does the myth of Prometheus represent in relation to the mechanism of human liberation through walking?

The chains were unbreakable – according to Zeus’ command – but the demigod devised a way to free himself from them. He manages to break free from his enchainment (his bonds) in a way unsuspected by Hephaestus. The same recurring punishment suggested to Prometheus that he should only wait for his body mass to drop to such a level that the shackles that bound his 4 limbs were no longer able to hold him. After 7 weeks he was able to break free from these unbreakable shackles.

One of Prometheus’ feats was to reveal himself to Zeus, but more was his feat of giving fire to mortals. His effort was always oriented to weave a moving plot, both physical, mental and emotional, as he had to manipulate the god of Olympus, in order to distract him and thus help the mortals.

Those Promethean actions were the beginning of a journey to walk, which at the present time we could equate to: what one feels and wishes to be said, is said, even if what is silent is reduced; if what is silent is in excess, it would be a symptom (meaning) -of the neurocognitive type- that the environment that surrounds him has caused him a trauma.

Prometheus’ message to the human being -once he had freed himself from the chains, since he had no need to break them- was that his only unavoidable mission that he must carry out indefinitely was: “To walk on planet Earth”.

In the face of these pandemics and viral aggressions we are ending up like Prometheus in chains, that is, chained to different forms that have been generated by the different varieties of the aggressor virus.

Let’s get down to certain activities recommended by the WALK-RWD System:

– Walking to free ourselves (Post AUTOLIBERATION OF NEGATIVE EMOTIONS THROUGH SELF-SUGGERABILITY). Walking liberates the human being.

– Performing a catharsis while walking (Post PSYCHOANALYSIS AND THE WALK-RWD SYSTEM).

– Walking and at the same time talking out loud, declaring part of the trauma that afflicts us, especially talking about the fears that we suffer or feel (Post WALK AND READ IN LOUD VOICE; Future Post MASCOTIAN CATHARSIS AND THE WALK-RWD SYSTEM-PART II).

– Performing Walking Brain Gymnastics exercises (Post CEREBRAL GYMNASTICS WHILE WALKING-EXERCISES).

– Walking with a pet (Post THE WALK-RWD SYSTEM AND PETS. PART I).

CHAINED PROMETHEUS

(*)PSYCHOLOGICAL REFERENT: The term “Psychological Referent” refers to a figure or model that a person uses as a point of reference in the psychological domain. This referent can be a real or imaginary person, and usually has characteristics or qualities that the individual admires, respects or seeks to emulate. The psychological referent can influence the way someone perceives the world, relates to others and develops their own psychological identity.

(**)PSYCHOLOGICAL ASCENDANT: “Psychological Ascendant” refers to a process of personal and psychological development in which a person experiences growth, improvement or advancement in their emotional and mental well-being. This ascent can manifest in different areas, such as self-esteem, resilience, authenticity or emotional management. It is a term that suggests a positive movement towards a higher or healthier psychological state. This concept highlights the idea of progression and evolution in the psychological realm of an individual.

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I am going to use the words hunger and appetite to try to unravel those cases where we find ourselves – often – not really knowing what we are feeling, i.e. we are unable to distinguish certain emotions and sensations with certainty. And of course, in doing so, to try to promote and convince that we should all walk every day.

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I will start by analyzing its most common meanings, which are those related to food intake, i.e. our nourishment through nutrients, and then move on to other human activities.

Understanding exactly what each of these sensations consists of will prevent us from being misled about what we really feel.

In this scenario, hunger and appetite are two terms related to the need to ingest food, but they have important differences in humans.

Hunger is a physiological sensation that originates in the central nervous system when the body needs energy and nutrients. This sensation is triggered by low blood glucose. Hunger is a signal that the body needs food to function properly and maintain energy balance.

Appetite, on the other hand, is a psychological sensation that relates to the desire to eat. Appetite can be influenced by emotional, cultural, social and environmental factors, such as the aroma and taste of food, the availability of food and past experiences with food. Unlike hunger, appetite is not always related to an actual physiological need for food.

Both sensations are related to the increased or decreased production and release of the hormones ghrelin and leptin. Both hormones are involved in appetite regulation and body weight control. Ghrelin is mainly produced in the stomach and stimulates appetite, i.e. it increases the desire to eat. It has also been shown to stimulate the release of growth hormone and to have effects on the regulation of glucose and fat metabolism. Leptin is mainly produced in adipose tissue and has an appetite suppressant effect. Leptin has been shown to play an important role in long-term body weight regulation by informing the brain about the amount of fat stored in the body. Both hormones work together to control appetite and body weight, and their balance is important for maintaining a healthy weight.

Now, which of these two sensations – hunger and appetite – do we enjoy more? Which of them do we do with pleasure, with greater happiness?

Perhaps this could be the most important answer as to our inclination towards one sensation or the other.

Can we clearly distinguish between the sensation of hunger and appetite?

Here we could enter a scenario that is difficult for some to elucidate and easy for others.

In terms of food, hunger is important because it is a signal that the body needs nutrients. On the other hand, appetite can be more difficult to control, as it can be influenced by psychological and social factors.

Ignoring hunger can lead to malnutrition, which can have serious health consequences.

If appetite is ignored, what are the serious health consequences?

It is important to find a balance between hunger and appetite in order to maintain a healthy and satisfying diet.

It is not easy to solve these questions.

Let’s move on to the part of transferring these 2 words to other human activities, in order to try to clarify ourselves. By doing it in this other way, the binomial hunger-appetite will allow us to decipher and understand -by our own personal nature- this type of sensations, which we ourselves often deceive and confuse, because we do not know how to distinguish these needs.

In addition to walking – which we will leave for the final part – there are other human functions and activities with which we could proceed with this analogy of the concepts of hunger and appetite. We will mention 4 of them:

Sleep: Sleep hunger refers to the physiological need for sleep to rest the body and mind. On the other hand, sleep appetite refers to the psychological desire to sleep because of the pleasure experienced during sleep and the feeling of well-being after a restful sleep. Sleep hunger refers to the physiological need for rest and recuperation. The appetite for sleep, on the other hand, relates to the psychological desire to have a good night’s rest and to enjoy the feeling of relaxation and comfort experienced during sleep. Both needs are related to physical and mental health, as sleep is essential for the proper functioning of the body.

Sexual activity: Sexual hunger refers to the physiological need for sex to satisfy the libido and maintain good sexual health. On the other hand, sexual appetite refers to the psychological desire to have sex for the pleasure of doing it, for the experience of doing it and the feeling of satisfaction that the body -physical and mental- gets after doing it.

Study: The hunger to study refers to the physiological need to learn and acquire knowledge. The appetite to study relates to the psychological desire to know more about a subject and to enjoy the learning process. Both needs are related to intellectual development and the acquisition of skills and competencies that can be useful in different areas of life.

Socializing: The hunger to socialize refers to the physiological need to establish social bonds and interact with other human beings. The appetite to socialize relates to the psychological desire to share experiences and emotions with others and to feel part of a social group. Both needs are related to emotional health and psychological well-being, as a lack of social relationships can lead to feelings of loneliness and isolation (Post HOMO SOCIABILIS OR SOCIALIS? HUMAN AGGRESSION WALKING IN CROWDED PLACES. PART IV of IX).

These scenarios allow us to better understand the confrontation that confronts us with the disparity between emotions and sensations, such as hunger and appetite, being fundamental needs in different human activities, and their functional inter-influence can have an important impact on people’s physical, intellectual and emotional health.

So far it would seem that hunger is identified with the “need for”; and appetite coincides with the “enjoyment of”.

In its analogy with walking in the human being, one could make the following relation between hunger and appetite:

The hunger for walking could be understood as a physiological need to move, to engage in physical activity and to exercise muscles and joints. This need is related to the importance of maintaining an active and healthy lifestyle, as walking is a fundamental activity for cardiovascular health and the maintenance of proper body weight.

On the other hand, the appetite for walking could be understood as the psychological desire to engage in physical activity, either because of the pleasure experienced during walking, the feeling of well-being after walking, or the need to release stress or emotional tension. This desire may be influenced by cultural, social and personal factors, such as the value placed on walking as a physical activity, the availability of time and space for walking, and previous experiences with walking.

In general, both hunger and appetite for walking are important for maintaining good physical and mental health. Hunger for walking indicates the need for physical activity and appetite for walking indicates the desire to enjoy walking. Therefore, finding a balance between the two can be beneficial for maintaining an active and healthy life.

Perhaps we should walk with both words hand in hand, being aware that both are satisfied by simply walking in any way and on any path; but yes, every day, even if it is only for half an hour.

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