I agree with Scuba Mama about skip breathing, definately not recommended for diving. Here is a little physiology about carbon dioxide in the body. Our primary drive in the body to regulate breathing is levels of carbon dioxide in the blood. If levels get to high, our breathing rate will increase to blow off excess until levels return to normal. Think about trying to hold your breath. You can only do it for a short amount of time until our body senses that the CO2 levels are to high forcing us to breath. We breath to get rid of carbon dioxide, not to take in oxygen. In people with obstrcutive pulmonary disaeaes such as emphysema, the body switches its primary drive from carbon dioxide to oxygen. This is called hypoxic drive. Because the body is so use to high levels of CO2 in the system from air being trapped in damaged lung tissue, it gets used to the high levels of CO2 and switches to sensing levels of oxygen. In theory, this is bad because if we administer oxygen to help them breath, we can slow the breathing rate and possibly stop their breathing all together. This takes 4-6 hours of breathing 100% oxygen. Hope this helps. Dive safe. |