The stomach can be retracted when it is stretched out. The stomach is an elastic sac-like organ, and it is a normal physiological phenomenon that the stomach opens up mainly because of excessive food intake, which makes the volume of the stomach larger. When food enters the stomach, it will be digested and absorbed, and expelled into the intestines through peristaltic movement of the stomach. Usually, food can be digested and emptied after 2~4 hours after entering the stomach, and when the food is emptied, the stomach will return to its normal size. Therefore, the stomach can be shrunk back again if it is propped open. However, if you overeat for a long period of time, the stomach will be in a dilated state for a long period of time, causing the stomach muscles to relax, and then it will take longer for the stomach to return to its normal size. And long-term overeating will also affect the normal function of the stomach, leading to stomach diseases. Normally, you should develop good eating habits, avoid overeating, try to eat small meals, chew and swallow slowly. All stomach discomfort, it is recommended to timely hospital diagnosis and treatment.