It is better to exercise at least 1~2 hours after eating. It is recommended to exercise 1~2 hours after eating, and the amount of exercise should not be too large and too strenuous. Eating will make a lot of blood to the stomach, intestinal mucosa, to help digest food. The blood that reaches the skeletal muscles of the limbs during exercise is about 30%~40%, and the blood in the gastrointestinal tract becomes less, thus affecting the digestion and absorption function. If the exercise is strenuous, it will increase gastrointestinal swing and may lead to phenomena such as intestinal torsion. If you exercise immediately after a meal, you are prone to a variety of gastrointestinal diseases, such as gastritis, enteritis, appendicitis and so on. Therefore, it is best to exercise 1~2 hours after meals, when the nutrients in the stomach and intestines have been absorbed, and the exercise will not stimulate the stomach and intestines, will not increase the burden, and can also promote intestinal peristalsis, so that the body metabolism is accelerated.