Many people sweat profusely when they exercise. The more they sweat during exercise, the better the fitness effect, I think. This is actually a very wrong concept. Experts remind that the more you sweat during exercise, the better the fitness effect. Moreover, we should also pay attention to the correct hydration after exercise to supplement the body's needs. Some people think that sweating can excrete metabolic waste in the body and play a role in detoxification, so the more you sweat, the better. Sweat actually comes from blood, and sweat contains certain blood components. Some people think that when sweating, some water evaporates, and solid substances such as protein and amino acids remain on the skin surface. Through the action of microorganisms on the skin surface, sour substances can be produced, thus producing unclean sweat. In fact, besides metabolizing waste, sweat also contains minerals, protein, amino acids, vitamins and other substances that are beneficial to the body. With the loss of sweat, these nutrients disappear accordingly.

So, don't care too much about a little sweat. But when you sweat a lot, you can't take it lightly. If you sweat more, your body fluid will decrease, so if you don't charge it in time, your blood volume will decrease, your heart rate will increase, your perspiration rate will decrease, your calorific value will decrease, your body temperature will increase, your body's electrolyte will be disordered, and your acid-base balance will be disordered, leading to dehydration and, in severe cases, heatstroke. Due to dehydration, the physiological functions of some main organs of the body are affected, the burden on the heart is aggravated, and the kidneys are damaged. A large loss of electrolytes such as sodium and potassium will cause neuromuscular system disorder, muscle weakness, muscle spasm and other symptoms. Dehydration can also reduce exercise ability and cause fatigue.

Let's find out why people sweat when they exercise. When we exercise, skeletal muscles contract, consume energy, generate heat and raise body temperature. When the temperature is out of the normal range, our hypothalamus, as the thermoregulation center, should give instructions to the following "departments at all levels". "To cool down!" "Sweating is the most commonly used and fastest physiological regulation method for regulating body temperature and calories. The amount of sweat during exercise is related to the following, so the effect of exercise cannot be judged by the amount of sweat. First, there are not only gender differences in the number of glands, but also individual differences. Secondly, because the body fluid content and muscle water content are greater than fat, people with high body fat rate can sweat less under the same exercise intensity. People with good physical strength, good physical exercise and good cardio-pulmonary endurance are not easy to sweat during exercise.

Sweating too much will do the following harm. If you sweat more, your body fluids will decrease. If it is not charged in time, the blood volume will decrease, the heart rate will increase, the calorific value will decrease, the body temperature will increase, the electrolyte in the body will be disordered, and the acid-base balance will be disordered, which will lead to dehydration and, in severe cases, heatstroke. Dehydration affects the physiological functions of some major organs of the body, increases the burden on the heart and damages the kidneys. A large loss of electrolytes such as sodium and potassium will cause neuromuscular system disorder, muscle weakness, muscle spasm and other symptoms. Dehydration can also reduce exercise ability and cause fatigue. Frequently dehydrated gas will cause problems such as increased blood viscosity, which will damage health.