You know breathing is always critical. Your body’s cells need oxygen to function, and you need to release carbon dioxide, a waste gas, through exhalation. When you run (or participate in any other ...

Your diaphragm is a thin muscle that separates your chest and abdomen. When you inhale, your diaphragm tightens and expands your chest cavity. A paralyzed diaphragm doesn’t tighten as it should when ...