Breathing is an important process involved in life. When a human breathes they are bringing oxygen to their whole body while also removing carbon dioxide from the body. Unfortunately, when someone suffers from apnea, the muscles that are involved in breathing are not working correctly, so the exchange of gases to and from the body is not as efficient.
Truth-About-Apnea-and-the-Exchange-of-Gases-in-the-Lungs.html