The most common reason for a big belly is the lack of exercise, the patient does not exercise after eating every day, so that the calories into fat accumulation in the abdomen over time formed a small belly. Usually work too much pressure, poor metabolism, not exercise plus too much diet, is the culprit of small belly become big, which is why middle-aged men are most likely to have a small belly big reason. Often wear tight pants, belt strangulation too tight, often consume food and drinks high in sugar, will also lead to a larger belly, due to excessive body fat, will lead to a series of diseases leading to health hazards. Patients are advised to take appropriate walks and exercise after eating every day, eat less food with high sugar content, and have regular heart guidance to avoid stressful situations.