[b]Drink 6 glasses of cool water daily (it should not be very cold). Drink green tea after every meal helps you burn fat. Drink ginger with lemon or mint after every meal. Walk daily for 20 minutes, and if you can’t walk at least twice a week. If you want to flatten your belly, all you have to do is drink a glass of warm water with a little lemon juice on en empty stomach.[/b]

Tea is a great and tasty way to help out with your digestion. I think another major issue is people eat too fast. If you slow down you'll get full without eating a lot.