Why is it that we are so thirsty after running, but the teacher does not let us drink enough immedia

After strenuous exercise, people tend to sweat a lot to take away heat, and sweat also takes away some of the salt in the human blood. If you drink a lot of water right away, it will increase the discharge of sweat, cause more salt loss, and increase the amount of blood circulation, which will increase the burden on the heart. Therefore, people should not drink water immediately after strenuous exercise.

Sports drinks can not be drunk casually, when you don't need to replenish the supplement, it may cause harm to the body, functional drinks in addition to water, but also contain glucose, sodium and potassium, etc., these substances only need to be replenished after a large amount of loss, if exercise does not cause the loss of sodium, potassium and other solutes, drink a large number of functional drinks, it will increase the content of sodium and potassium, which may affect the balance of water and electrolytes.

Exercise hydration is very particular. The intensity, duration, weather conditions, etc. all have an impact. The easiest way to do this is to judge by weight.

Since dehydration is the main cause of post-exercise weight loss, you can calculate the proportion of dehydration to body weight based on the method of "pre-exercise weight minus post-exercise weight divided by pre-exercise weight". When the dehydration is less than 1% of your body weight, you will feel mildly thirsty, and you only need to replenish regular water at this time; When dehydration accounts for 2%-3% of body weight, taking 50 kg of body weight as an example, when the weight drops by 1-kg after exercise, it is necessary to supplement saline with a concentration lower than that; Supplementation with sports drinks is only necessary if the dehydration is greater than 4% of body weight. At this time, exercise consumes a lot of water, and electrolytes, sodium, and potassium are also lost a lot, and supplementing with sports drinks can help restore the body's functions.

For hydration, we must stick to small amounts many times! Don't drink too much.

Children who have just finished playing games in the yard, especially in the summer, tend to sweat a lot, and at this time the children will definitely feel very thirsty, and really want to pick up the bowl and drink enough. However, teachers often ask children to drink less first, and it is still light salt water. Why is that?

This is because people tend to sweat a lot after strenuous activity, and these sweats take away some of the salt in the blood. If you drink a lot of plain water immediately after strenuous activity, although the child does not feel thirsty, the water enters the body and dilutes the salt in the blood. In addition, because drinking water just after drinking will increase the discharge of sweat, which will cause more salt loss in the body, and when water is inhaled into the bloodstream, it will also increase the amount of circulating blood, which will increase the burden on the heart.

As a result, people tend to be pale, have a weak heart, and have shortness of breath. In particular, the children's hearts are still very underdeveloped. Its working capacity is still relatively low, so it should be paid more attention to.

Therefore, when children have just finished a game with a large amount of activity, especially after sweating a lot, they should drink some salted water first, and then drink boiled water after a short rest, so that the lost salt in the blood will be replenished in time, and at the same time, it will not overburden the heart, so the above phenomenon will not appear.