What is the reason for not sweating in summer?

Everyone sweats in summer unless you are weak.

Sweating in animals is a physiological phenomenon, just like the water evaporated by photosynthesis in plants. There are two kinds of sweat glands in human body: apocrine glands distributed in armpits and eccrine glands distributed all over the body. When the temperature or body temperature rises, the water evaporated by the human body through these sweat glands is sweat. There are about 2-5 million eccrine glands in the human body, with an average of 120 in the skin the size of a finger egg and more than 180 in the forehead and nose tip, so there is more sweat in these parts, and sometimes beads of sweat can be formed.

Sweat is colorless and transparent, in which water accounts for more than 99%. Under normal circumstances, sweat is mainly secreted by eccrine glands, and there are not many sweat glands involved in secretion activities, and the sweat discharged is also very small, which is not easy to be detected. This phenomenon is called recessive sweating. A person sweats unconsciously for about 500-700 ml a day and night, while people who exercise vigorously or work in high temperature can sweat 1000-3000 ml per hour. Of course, this situation is sweating. Because people sweat more than 500 ml every day, if the amount of activity increases, they will sweat more. This is also the main reason why some people drink more water and urinate less every day.

Due to shock or other mental factors, sympathetic nerves will be excited, resulting in a lot of sweating on the forehead, armpits, palms and soles. Eating mala Tang will make you sweat profusely, which is medically called taste sweating. This is because nerve endings and taste organs in oral mucosa and tongue are stimulated.

Normal sweating can regulate body temperature and moisturize skin. Sweating can volatilize the heat in the human body, maintain the relative stability of body temperature and the normal activities of various tissues and organs. In hot summer, a lot of sweating can lower body temperature and prevent heatstroke, while in winter, less sweating and less heat volatilization can prevent people from feeling cold due to hypothermia. At the same time, lactic acid in sweat can soften the stratum corneum, inhibit the growth of bacteria and prevent some skin diseases. Because sweating can excrete some urea, it has a certain auxiliary therapeutic effect on renal failure. But if you sweat too much, it will affect the balance of water and salt in your body. We see that athletes drink some brackish water or salty drinks after the game, just to replenish water and salt in time.