There is salt on the sweaty clothes

Many people sweat in life, which is actually the excretion of sweat from the body. The taste of sweat is generally salty because there is some fate in it. Especially for some workers who do physical work, they are most likely to sweat, and the clothes they wear will have some sweat stains because of sweating. These sweat stains contain a lot of salt. So what should you do if there is salt on your clothes due to sweating?

That is salt. Sweat contains a lot of salt. When you sweat, the salt will be discharged from the body along with the water and stick to the clothes. After the water evaporates, the salt cannot disappear and forms a white spot on the clothes. Why do people sweat? This question seems simple, but to answer it accurately, this is a science.

In fact, sweating of humans and animals is a physiological phenomenon, just like the water evaporated by plants during photosynthesis. There are two kinds of sweat glands on the human body: large sweat glands distributed in the armpits and small sweat glands distributed throughout the body. When the air temperature or body temperature rises, the water evaporated from these sweat glands is sweat. There are about 2-5 million small sweat glands on the human body. On average, there are 120 small sweat glands in the skin as big as a finger egg. There are more than 180 sweat glands in the forehead, nose tip and other parts, so these parts sweat more, and sometimes sweat beads can be formed.

Sweat is colorless and transparent, and water accounts for more than 99%. Under normal circumstances, sweat is mainly secreted through small sweat glands, and there are not many sweat glands involved in the secretion activity, and the sweat secreted is so little that it is not easily noticed. This phenomenon is called insensible sweating. A person sweats about 500-700 ml in a day and a night, while people who exercise vigorously or work in a high temperature environment can sweat 1000-3000 ml per hour. Of course, this is explicit sweating. Since people sweat more than 500 ml insensible sweat every day, if the amount of activity increases, sweating will be more. This is also the main reason why some people drink a lot of water every day but do not urinate much.

Fright or other mental factors can cause sympathetic nerve excitement, resulting in heavy sweating in the forehead, armpits, palms, soles, etc. Eating spicy or hot food can cause profuse sweating, which is called taste sweating in medicine. This is because the nerve endings and taste organs in the oral mucosa, tongue, etc. are stimulated.

Normal sweating has the function of regulating body temperature and moisturizing the skin. Sweating can evaporate the heat in the human body, maintain the relative stability of body temperature and the normal activities of various tissues and organs. In the hot summer, sweating a lot can lower the body temperature and prevent heatstroke, while in the winter, sweating is less and the evaporated heat is less, which can prevent the feeling of cold due to the lower body temperature. At the same time, the lactic acid in sweat can soften the skin's stratum corneum, inhibit bacterial growth, and prevent the occurrence of certain skin diseases. Since sweating can excrete some urea, it also has a certain auxiliary therapeutic effect on people with renal failure. But if you sweat too much, it will affect the balance of water and salt in the body. We see that athletes have to drink some light salt water or salt drinks after the game, just to replenish water and salt in time.