Hello, after exercise, muscles will be excited for a while. Blood supply in the body is concentrated in muscles, while organs such as stomach and intestines are in a relatively ischemic state. Moreover, the nerve excitation point is in the muscle group, which will inhibit the digestive system and reduce intestinal peristalsis, which is not conducive to digestion.

Guiding opinions:

So usually exercise for about an hour, and then consider eating. You can replenish water after exercise. Add clothes in time to prevent catching cold.