Many people only know that exercise is good for the body, but do not know what happens to the body after exercise. First of all, exercisers have a lower risk of catching a cold or flu. This is because exercise increases the level of immune globulin, which helps strengthen the immune system. system to prevent infection.

Second, mood-boosting chemicals such as serotonin, dopamine, and norepinephrine flood the brain in the hours after exercise, leaving the body feeling relaxed and stress-free.

Third, exercisers can burn more calories even in a state of rest. This is the afterburning effect, that is, for every 100 kcal of calories consumed during exercise, an additional 15 kcal of calories can be consumed after the exercise.

For example, if you run 5 kilometers, you can burn about 300 kcal, and you can burn another 45 kcal after the run. And, blood sugar levels begin to drop, depending on what you ate before your workout, as well as the intensity and duration of your workout.

Drinking a lot of water immediately after intense exercise is not good for the internal organs, especially the lungs, which are easy to suffer from stagnant water. In addition, it should be noted that the blood should carry nutrients to the parts that need nutrients after intense exercise. If you drink too much water, it will be diluted Blood, and water needs some blood to process, so it increases the burden on the body.

After strenuous exercise, the heart and lung function of ordinary people reaches the peak, the blood circulation is accelerated, the academic flow into the muscles, joints, and other sports organs increases, the blood flowing into the stomach are relatively reduced, and the digestive secretions are reduced.

After drinking a lot of water, a large amount of water accumulates in the abnormal gastrointestinal system in a short time, and the stomach feels heavy and stuffy, which affects normal breathing. Water enters the blood to increase blood volume, and the burden on the heart suddenly increases, resulting in abnormal cardiopulmonary function.

If you drink too much water at one time due to thirst after exercise, the content of salt in the blood will decrease, the weather will be hot, and sweat more, the salt will be lost more easily, and the osmotic pressure of cells will be reduced, the balance of sodium metabolism will be imbalanced, and muscle cramps will occur.

Brain tissue is fixed in the hard skull, and swelling of brain cells can cause increased brain pressure, causing headaches, vomiting, drowsiness, blurred vision, slow heart rate, and other "water intoxication" symptoms.

In order to properly improve the hydration in the body and ensure that the excessive intake of water has time to be discharged, it is recommended that exercisers drink about 500ml of liquid 2 hours before exercise. It can be ensured that there is enough water in the body when exercising. Be careful not to drink it all at once.

In addition, fluid intake should be started as early as possible during exercise, and adequate fluid intake at certain intervals, or the maximum amount of fluid tolerated, should be taken to replace all the water lost in sweat.