Eat an Apple
Adding fiber to your diet will help alleviate stomachaches and keep your digestive system healthy. One study of fiber's effect on the tummy discovered that people who ate fiber-rich foods at the first sign of a tummy ache cut their chances of getting a full-blown upset stomach in half. If you haven't been eating much fiber, be sure to start slowly. Jumping in with loads of fiber-rich foods after living on burgers and fries will give you a mean case of gas. Add fiber gradually over a few months and drink plenty of water to avoid overloading your system. To get started, grab an apple and nosh away, but remember to eat the peel -- that's where you get most of your roughage.