The body is an amazing mechanism… when everything’s working correctly. But when one little bit gets out of step, you can end up in some serious discomfort. Case in point: a stitch in your side. What causes a stitch? This sharp pain is usually caused by a muscle spasm in your diaphragm — the muscle between your chest and your abdomen. When blood flow to the diaphragm is interrupted, the muscle can cramp. So, for example, when you’re running, the movement of your legs can cause pressure in the belly. The deep breathing you’re doing has the lungs expanding more … Continue reading →