If you're feeling bloated or have trapped gas in your stomach you can help pass that gas by drinking several glasses of water during the day.
Water is very healthy for you and can help flush toxins out of your body and help settle your stomach to get the trapped gas out.
Sometimes taking a nice walk can help your stomach and help the gas come out of your stomach.
Whenever you feel like you need to pass gas you should go ahead and pass the gas instead of holding it back to prevent a buildup of gas in your stomach.