During exercise, the food in the stomach will shake, impact and pull the mesentery, thus causing abdominal pain. During exercise, blood is mainly supplied to muscles, and the blood flow of digestive organs decreases, which will affect normal food digestion and cause indigestion. Generally speaking, it is better to exercise for 30-60 minutes after meals, so that more blood can be supplied to the exercise organs, which will weaken the digestive function of the stomach, easily lead to gastrointestinal discomfort and pain, and even indigestion. Don't exercise immediately after eating. Take a rest for half an hour first, and then go for a walk. I just had a full meal, and the food is still digested in my stomach. Exercise immediately will make my stomach uncomfortable and even damage it, so I need to take it slowly.
The secretion of digestive juice is inhibited, which affects the process of human digestion and absorption. If you do it for a long time, it will lead to indigestion, abdominal pain, stomach disease or gastrointestinal digestive system diseases, and abdominal pain is the most common. Exercise immediately after meals will slow down the digestion of food and increase the burden on the stomach. At the same time, strenuous exercise after meals produces vomiting. Therefore, it is not recommended to exercise immediately after meals.
Usually, carbohydrates are consumed in the first 20 minutes of fitness exercise, and human fat is ignited as the second power source after 20 minutes. Therefore, we usually think that aerobic exercise needs more than 20 minutes to lose weight, which can exceed the actual effect of fat consumption. Eating is good for exercise, but after 45 minutes, because the stomach is in a state of burden just after eating, strenuous exercise hurts the stomach.