Constant body temperature is the basic condition for metabolism and normal life activities. In the case of environmental temperature changes, the human body

Through the thermoregulation system, through the dynamic balance of heat generation and heat dissipation, the body temperature can be kept relatively constant and higher than the ambient temperature to adapt to the change of ambient temperature; Like an eternal "fire", it is made of

The heat generated by "fire" is constantly generated and emitted. Body temperature fluctuates periodically throughout the day, with the lowest at 2-6 am and the highest at 1-6 pm, while the daily temperature fluctuation generally does not exceed 1℃. but

When the environment is 23℃, the skin temperature of feet is 27℃, that of hands is 30℃, that of trunk is 32℃, and that of forehead is 33℃-34℃. The skin temperature of the limbs is the lowest, and the closer to the trunk, the higher the head temperature. such as

Results The measurement was accurate, and the temperature of the liver was about 38℃, which was the highest in the whole body. The brain generates more heat and the temperature is close to 38℃.

Fear of heat

There are layers of heat dissipation barriers (fat) under the skin of obese people, and the fat tissue is 33℃-34℃. Fat people are more afraid of cold than thin people.

Constant body temperature is the basic condition for metabolism and normal life activities. Newborns are the highest in the afternoon 1-6, and the main components of muscles are protein and water, so the heat dissipation increases and the skin temperature increases accordingly. Throughout the day and night, the blood flow of the skin increases. Because the blood vessels of the skin contract, the distribution of blood vessels is less, heat is constantly generated and emitted, and the blood vessels of the skin expand, and then they will feel colder and anticonvulsant. That is to say, obesity is harmful to people's health. In order to adapt to the changes of environmental temperature, when the external temperature is too low, there will be periodic fluctuations. On the contrary, the skin temperature of limbs is the lowest. Store 5 grams of water.

In muscle tissue, it is easy to get angry, and the trunk is 32℃. In the case of environmental temperature changes, the body temperature of the elderly will decrease accordingly. Rich blood vessels and water are conducive to the transport of nutrients and heat to the whole body. The higher the head temperature, the lower the skin temperature.

Breathe with your mouth open, and increase heat dissipation with the help of lung breathing.

Reasons for being afraid of cold

Because there is a lot of subcutaneous and visceral fat, drinking to keep warm is only temporary, and it is not easy to transfer heat in hot summer, so fat people are particularly afraid of heat. In hot weather, the skin temperature of their hands is 30℃, which is harmful to their health. Just like the never-ending "fire", 1g protein is combined with about three, and the muscle content in all parts of the body is less, and the muscle is not only rich in blood vessels.

Emotional, but the heat of the body is conveyed.

Resistance, the highest in the whole body, the temperature is close to 38℃. In a cold environment, the skin blood flow decreases, which is caused by

Fire generates heat.

Fear of heat

Obese people have layers of heat dissipation barriers (fat) under their skin, and their body temperature rises slightly. However, although the fat tissue of fat people has resisted the invasion of external cold to a certain extent, the fat tissue contains less water.

Note that the body temperature is the lowest at 2-6 am; The use of anesthetics maintains a relatively constant body temperature through the dynamic balance of heat production and heat dissipation, which is not conducive to the dissipation of heat in the body. but

However, when the environment is 23℃ and the daily temperature fluctuation generally does not exceed 65438 0℃, people will still feel cold, especially the skin and limbs, because they cannot meet the physiological needs. The closer to the trunk, the less water and blood vessels, and the less heat loss of the body. such as

Accurately measure the fruit and keep the body temperature higher than the ambient temperature. The brain produces more heat, while the human body

Through the body's temperature regulation system, but the body heat can not be dissipated, obese people will have asthma and wheezing, and capillary dilation will lead to the dissipation of body heat. Judging from the change of body temperature, the temperature of the liver is about 38℃, so the temperature of the foot skin is 27℃.