There is no clear judgment on whether running is good before or after meals, and there is no clinical indication that running is good before or after meals. Running belongs to a kind of exercise with relatively high intensity and exercise volume. Running on an empty stomach before meals may lead to a large amount of water discharge from the body, accelerated blood circulation in the muscles, and a relative decrease in blood in the stomach and intestines, which is not conducive to the digestion and absorption of food, and for some weak patients, running on an empty stomach may also lead to hypoglycemia or low blood pressure symptoms. However, running after a meal will affect the digestion and absorption of food, and running after a full meal may cause gastrointestinal tract forks or gastric ptosis, so it is necessary to run only about two hours after the meal. Running belongs to a kind of more common exercise, and it can enhance the patient’s physical fitness, which is good for the body. However, there are certain precautions when running, do not drink a lot of water after a long period of running, so as not to cause water electrolyte disorders.