How can you clean your stomach?

My grandfather (a country doctor) always told us the cure for a stomach bloated with gas was to drink lots of water and walk around. Light physical activity combined with the water forces the gas to move through your system. Instant option: Quickly drink 6 oz. of cold club soad with about 8 shakes or so of bitters.and a little salt. Works for great short term relief of bloating, nausea etc. Try it....You'll like it....!