Where does the heat that the human body can feel come from?

I think you have to figure out what causes the heat that people feel. The reason why people feel heat is because the collision between the molecules is more intense. The reason why people feel cold is because the collision between the molecules in that part is lower than normal.

In other words, people have the sensation of heat and cold, and the root cause is the intensity of the collision between molecules. With that in mind, I'm going to tell you why radiation causes a sense of heat.

We all know that solar radiation is in the form of electromagnetic waves, and the natural frequency of the red part of the electromagnetic band is closest to the natural frequency of water, and it is most likely to cause resonance with water. To put it simply, the energy carried by this part of the electromagnetic wave is most easily absorbed by water, and the water molecules in the composition of the human body are the largest. After the solid water molecules absorb infrared waves, their internal energy increases, and the degree of thermal movement increases, that is, the collision is more intense, so they feel hot.

But the heat that people feel is not just radiation. As I said earlier, the heat we feel is caused by the collision between molecules, and this collision can also be caused by the direct collision of molecules from the outside world, for example, our body is in direct contact with a hot object. The collision between the molecules of a hot object and the body causes the movement of molecules between the bodies to accelerate, and the collision becomes stronger, so it feels hotter.

Cold and heat are opposites, which means that the body's molecules radiate energy outward, or when they collide with the outside world, their movement slows down. I say this in the hope that you will understand.

How many calories does a person consume in a day? It depends on how athletic we are. Multiply your current weight by 11 to see how many calories you need.

For example, if you weigh 55 kg, then you need about 1,320 calories per day. Even if you're less than a meter tall, you must not eat less than 1,200 calories a day. The results of the survey showed that less than 1200 calories per day reduced the resting metabolic rate by up to 45%.

To maintain their current weight, a person must eat 30 to 35 calories per kilogram of body weight per day. A 50-kilogram person who eats 1,500 to 2,000 kcal a day will maintain their current weight.

One egg is about 75 calories.

From anything above one's own body temperature. Heat from the outside - Thermoreceptors within ** - Afferent Nerves - Central Nervous System - Sensation.

People feel the heat coming from you and the red blood cells!

The body's heat** is mainly the energy generated by the energy digested, especially after ATP is decomposed, most of the energy is generated, which is converted into heat for the human body.

Fat is the most calorie-dense nutrient, so foods that contain more fat contain more calories. Sugars should be used as the main calorie**, and the first sentence of the "Chinese Nutrition and Dietary Guidelines" "Diverse foods, mainly cereals" means that sugar-rich cereals should be used as the main calories**.

Although protein can be converted into calories in the body, it has a more important physiological role and is very uneconomical to consume as calories, so attention should be paid to supplementing some foods containing fat and sugar at the same time as protein foods to reduce the "burning" of protein.

Body heat

In the process of life activities of the human body, all life activities need energy, such as the synthesis reaction of substance metabolism, muscle contraction, gland secretion, and so on. And this energy is mainly in food. The nutrients contained in animal and plant foods can be divided into five main categories:

Carbohydrates, lipids, proteins, minerals and vitamins, plus water, are the six main groups. Carbohydrates, fats (fats can also store calories) and proteins are oxidized in the body to release energy. The three are collectively referred to as "energy nutrients" or "calorific substances".

The heat of the human body is mainly dissipated through **, breathing, urine, and feces, and it is also through the heat dissipation in these places that our body is always kept at a suitable temperature.

It is the largest heat dissipation tissue in the human body, and we all know that the area occupied by the human body is very large. But do you know that ** is the largest heat dissipation organ in the human body! For example, when we exercise, we will see that ** will sweat, which is heat dissipation.

And although you don't sweat at ordinary times, it is also dissipating heat, but it doesn't emit more heat when you don't sweat. In addition, the sweat that everyone leaves on the ** will also absorb heat if it evaporates. So everyone should protect our **!

Breathing also plays a good role in heat dissipation, and when the temperature drops in winter, does it feel hot as soon as you breathe, yes, it means that your breath is emitting heat. And in the non-cold season, breathing is also heat dissipating, but because of the temperature, we can't see the heat of winter. Many people know that doing aerobic exercise can**, because aerobic exercise will increase the breathing rate, heat dissipation will also increase, and excess fat can be burned.

In addition to the above heat dissipation methods, daily urination and feces are also important ways to dissipate heat. The urine and stool excreted by the human body also have temperature, which can be seen in a low temperature environment. In addition, drinking more water every day can also increase the frequency of excretion, so as to dissipate more heat and speed up metabolism.

The human body is a very wonderful organism, and maintaining good heat dissipation can make this body have a suitable temperature. At the same time, regular heat dissipation in the body can also speed up the speed of metabolism and allow the body to develop healthily. Everyone must pay more attention to protecting their body tissues in daily life, especially the best tissues.

At the same time, we should also pay attention to exercising, if you don't exercise for a long time, the heat will be dissipated slowly, and the metabolism will be slow, which is not conducive to health!

The heat of the human body is mainly dissipated through skin grinding, breathing, urination, and feces, and it is also through the heat dissipation in these places that our body bridge body is always kept at a suitable temperature.

Half of the body's heat is lost through the head, and if the head is cold, it will cause cerebral blood vessels to constrict, and at least dizziness and headache.

The heat produced in our bodies is that they are oxidized to produce heat for the body to sustain life, growth, development and movement. When the heat supply is too much, the excess heat will be stored as fat, and after a long time, the body will become fat.

This energy is provided by heat-producing nutrients in food. The calorie-producing nutrients in food are proteins, fats, sugars, and carbohydrates.

There are three main ways of caloric consumption, the first part is the basal metabolic rate, which accounts for about 65 70% of the total caloric expenditure of the human body, the second part is physical activity, which accounts for about 15 30% of the total caloric expenditure, and the third part is the thermal effect of food, accounting for at least about 10%, and the proportion of these three has been roughly fixed.

Each of us has our own basal metabolism, which is the basic calories that you burn all day without eating or drinking just lying down. The heat on the body is the internal operation of the body, and only when the internal operation of the body can the continuation of life be maintained.

But the body's heat also needs to be supplied externally. Our body is like a car, the oil in the fuel tank can be used for the car to drive, but the fuel is also constantly consumed, and we need to continue to refuel to ensure the normal operation of the car.

So we need to eat food, and the food provides the nutrients that the human body needs, and the human body automatically converts these nutrients into calories for life activities.

Calculate the number of calories each time – plan to make 45 to 65 percent of those calories broken down by carbohydrates, 10 to 30 percent from protein, and 25 to 35 percent from healthy fats.

Human body calorie consumption mainly includes the following aspects:

1. Basal metabolism: that is, the energy required to maintain basic life activities, which is generally measured after waking up in the early morning, which is the most accurate;

2. Energy consumed by physical activities: that is, the energy required for human activities, work, sports, etc.;

3. The special dynamic effect of food: that is, when eating, you need to consume calories, which varies according to the food you eat, such as the intake of protein food, fat or carbohydrates, and there will be energy consumption;

4. Special populations: For example, children also need to consume energy during their growth and development. In the calorie consumption of the human body, it is better to control physical activity, because basal metabolism is related to height, weight, and general conditions.

Physical activity can be increased by increasing the amount of exercise and workload through appropriate activity.

Through respiration, the three major nutrients ingested into the human body: carbohydrates, fats, and proteins are converted into calories.

The three major nutrients are bio-oxidized to produce CO2 and water, which release energy.

1. Carbohydrates are the main energy for muscle activity**. Generally speaking, more than 50% of the body's energy needs are provided by carbohydrates in food.

2. Protein is the material basis of all life and an important component of body tissues and organs. About 3% of the protein in the body is renewed every day. Only adequate protein intake can maintain tissue renewal.

3. Fat is also an important energy substance, fat energy content is the main storage form of various energy substances in the body, under normal circumstances, 40% -50% of the energy substances consumed by the human body come from fat in the body, which is an indispensable part of the human body to produce energy.

Calories are absorbed from food.

Heat is generated when substances are burned, and the most common combustion is the need for oxygen, right?

Simply put, heat is generated when a substance is oxidized by oxygen.

The food we eat, including carbohydrates such as sugars, is digested and turned into glucose, which enters the bloodstream. When we breathe, we inhale oxygen, and the oxygen eventually enters the bloodstream and oxidizes with glucose – you can think of it as burning, but it's not as drastic as we normally see. However, in this process, it provides heat energy to the human body stably, and part of the heat is used by the human body, such as walking and exercising (so it will feel hotter than usual when exercising vigorously), and the other part is dispersed, which is the heat emitted by the human body.

It's like... The gasoline used in the car burns after the engine starts, and the heat generated makes the car run partly and the engine of the car hot.

It's just that our human body is going on all the time anyway, and it is necessary to maintain a certain body temperature, because many enzyme functions can only play at this temperature.

Until you die, you stop breathing, and you stop burning,。。 So the dead don't breathe, they're cold, they don't move

Humans are homeothermic animals, and mitochondria are organelles in the cells of the human body, and mitochondria will carry out respiration, breaking down the organic matter obtained by the body through food into water and carbon dioxide, and at the same time consuming oxygen. In this process, the energy in the organic matter is released to supply other physiological activities of the cells, and there is also heat energy to maintain the body's body temperature. And the body temperature of 37 degrees Celsius is also the result of long-term evolution.

There is a lot of energy produced by cell metabolism in the human body, only part of which is used for various activities in the daily life, while the other part is converted into internal energy (i.e., heat energy) and emitted, that is, body temperature is generated. Hopefully, I understand ......

The calories of the human body are mainly produced by the metabolic decomposition of foods such as carbohydrates, fats, proteins, etc. If you don't eat enough food, you break down glycogen and fat stored in your body.