A striking stomach is one of the symptoms of ballooning which, in itself is a natural process of the body. In a normal state, approximately 1 liter (approximately half) of the stomach and the bowel is filled with gas.
The air in the stomach is the result of the work of microorganisms of the intestinal microflora – bacteria which help the digestive process. More it is difficult for the stomach to digest food, more gases are produced.
and at the same time, help the stomach in its daily work.