After strenuous exercise, you should rest 1~2 hours before eating, because within a short time after exercise, the blood is still concentrated in muscles, skin and other parts, and the gastrointestinal tract is also in a relatively ischemic state. Eating immediately after exercise is bound to form blood supply to gastrointestinal tract and muscle skin. If the blood can't return to the gastrointestinal system for a while, a large amount of undigested meat food will cause acute gastrointestinal and pancreatic inflammation and even accidental death. Therefore, we must have enough rest time to let the blood return to a calm state before eating.

In addition, watermelon is rich in sugar, and the energy consumed after running will be replenished to the body again, which is not conducive to weight loss or fitness. So you suggest eating watermelon after running.

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