Why do I have salt on me?

Salt is an inorganic substance, which the human body cannot digest and absorb energy from. According to the theory of evolution, living things don't leave things that are bad for them in their bodies. Although there is no obvious harm in not discharging salt, if you always eat salt, there will be more and more salt in your body, and if there is too much salt, you have to discharge it. It can't be absorbed without discharging salt, but the human body needs to absorb salt continuously, so it is mainly discharged from sweat glands. Salt in summer balances human metabolism. Sweating can expel toxins from the human body and release heat, which is beneficial to human health. Sweat contains water and a lot of salt. Sweating is the instinct of human body and a way to maintain normal body temperature. When the weather is hot, or after strenuous physical exercise, a lot of excess heat will be accumulated in the body. By sweating, the human body can take these calories out of the body, keep the body temperature within the normal range and make people feel cool. There are many sweat glands in the human body. Apocrine glands grow in armpits, nests and anus, and eccrine glands are everywhere. There are about 2 million sweat glands on the surface of human skin, from which sweat flows out. In order to ensure that sweat glands can work normally, you must always listen to the sound of bathing and keep your skin clean; Otherwise, sweat glands are easily blocked, sweat can't flow out, and the skin will be inflamed and prickly heat will occur. If a person doesn't sweat, he will get sick. It won't hurt people, but drink plenty of water and take a bath frequently, so as to be healthy and comfortable. More salt means more sweating, and there is no harm. Be careful not to lack water. If you don't sweat much in summer, you can usually drink boiled water and tea. Boiled water is rich in many minerals and trace elements, which can adjust the internal balance of human body, which is irreplaceable by ordinary drinks. Salt should be added at the same time of hydration. In hot summer, after people sweat a lot, electrolytes such as sodium salt in the body will also be lost. If you drink plenty of boiled water at this time without supplementing salt, muscle twitching or muscle spasmodic pain will occur. Just pay attention to these.