You need to wait for 1 hour after eating before working out. Because the body eats a lot of food, the burden of stomach function is significantly increased. In the process of strenuous exercise, the blood oxygen demand of the stomach rises sharply, which will not only affect the efficiency of the functioning of the gastrointestinal tract, but even induce contractile spasm of the local smooth muscle, causing symptoms such as gastric distension, nausea, vomiting, acid reflux and mouth bitterness. One hour after a meal and then moderate exercise, in addition to reducing the probability of adverse symptoms in the digestive tract, but also help intestinal tissue peristalsis, promote the body’s metabolites into the lower digestive tract, to prevent the occurrence of constipation symptoms. However, if you need to carry out high-intensity exercise program after meals, the interval length needs to be extended according to your actual situation, so as not to affect the normal function of the human digestive tract tissue operation.