Does Any1 Know How Much The Stomach Balloon Cost Why Does My Stomach Balloon When I Eat?

Why does my stomach balloon when i eat? - does any1 know how much the stomach balloon cost

Normally I have a nice flat stomach, when my stomach is empty, but when something to drink or eat, my stomach swells up really to the point that they become pregnant to seek the true sense of the word. any1 know y? I noticed that this does not happen to my sister ... after eating / drinking the stomach, in principle, always looks the same. Some1 tell me that I might have something to do w / my abdominal muscles. (my sister has a very muscular body)