In general, half an hour after a meal can be moderate exercise, such as walking, jogging, brisk walking, more intense exercise should be carried out after 1 hour after a meal. After eating, food will be in the stomach for initial digestion, generally stay 1-4 hours, premature exercise, there is still a lot of food in the stomach, easy to lead to indigestion, gastric prolapse, and even intestinal obstruction or induced gastric ulcer, appendicitis, etc.. Half an hour after eating, the food in the stomach is relatively reduced, moderate exercise can be carried out to help the gastrointestinal tract to digest food, but at this time can not be strenuous exercise, in an hour after the basic digestion of food in the stomach, before the intensity of slightly larger exercise. In addition, patients with indigestion should also delay the exercise time. Moderate exercise after meals can better improve the digestive function and help patients digest food as well as nutrient absorption, but attention should be paid to the control of exercise time.