Because exercise immediately after a meal will bring stimulation to the stomach and intestines, causing nausea, vomiting, stomach cramps and other symptoms of discomfort. At the same time, the body's digestive system needs a lot of blood to help digest food and absorb nutrients after eating a full meal. If you exercise immediately, the body's muscles also need a lot of blood to participate in the blood supply of the digestive system and muscle tissue at the same time, easy to lead to digestive dysfunction, causing indigestion, but also affect the effect of exercise.
Two, the best time between meals and exercise
By the intensity of the exercise, walking, walking, square dancing, tai chi and other light exercise, half an hour to an hour after meals can be carried out. Jogging, weight loss exercises, cycling and other moderate exercise can be carried out one hour to two hours after meals. Long-distance running, jumping rope, playing soccer, playing basketball and other high-intensity exercise, it is appropriate to carry out two hours to three hours after meals.
By meal size, if the meal size before exercise is larger, and eat protein and fat-based food, which are not well digested, it is best to exercise more than two hours after the meal. If the meal size is smaller and the food is mainly carbohydrates, vegetables, fruits or fluids, the interval between meal and exercise can be relatively shortened according to the intensity of the exercise.