As a running coach, people ask me ALL THE TIME why they get a cramp in their side while running. Those things are SO annoying when you are trying to run, aren’t they? They pull you right out of that zone you are in and make you feel like your lungs are going to explode! But reality is, they are pretty harmless.
The side cramp is actually a muscle spasm of the diaphragm, which is instrumental in breathing. Since your diaphram is a muscle it can also get fatigued. The cramp affects the diaphragm muscle, the supporting ligaments, tendons and surrounding connective tissue. That’s why it hurts so damn bad sometimes. [Read more…]