Many people have stomach cramps when they do running. Cramps on sides of the body are also known as side stitch. It causes pain in lower abdomen. This pain occurs when you do shallow breathing instead of taking deep breaths from lower lungs. This condition affects people who run in marathons. Military people who do running are also affected by this problem. You can prevent stomach cramps and we will give you some tips for this. Whenever you have side cramps, you should bend the body forward and inhale through nose while exhaling through the mouth. Following are some tips on how to avoid stomach cramps when running.