Practice abdominal muscle stomach became bulging, one is because only do exercise abdominal muscle, abdominal muscle thickened, did not do fat loss exercise, the stomach bulged. Secondly, because the appetite after exercise, and 1 to 2 hours after exercise, and anabolic exuberance, when there is no control diet, ate a lot of protein, carbohydrates and fat, muscle increased, glycogen reserves also increased, and can be converted into fat in the body to accumulate, the abdomen is no exception, the accumulation of a lot of fat, the stomach naturally bulged up.