Doing strenuous exercise immediately after meals will inhibit the secretion of digestive juice and the peristalsis of digestive tract. At the same time, because of strenuous exercise, the blood flowing to the bones and muscles of the whole body will increase, so that the blood in the stomach and viscera will be relatively reduced, which will easily cause indigestion, affect absorption, and even cause chronic indigestion in severe cases. So it is not advisable to do strenuous exercise after meals. How long should I rest after dinner before exercising? It depends on one's physical fitness, sports, amount of exercise and intensity of exercise. People who are healthy and often take part in sports can take part in sports about an hour after meals. As for people who don't exercise regularly or are physically weak, the interval will be longer. People with gastrointestinal diseases should consult a doctor before making a decision. In addition, rest time is also related to the nature of food. After eating indigestible food, you have a longer rest time. I hope it helps you.