Monday, October 23, 2006

Mouth Breather: An Addendum

I wrote before about using sama vritti breath to extend my dive times by preserving my oxegyn. Breathe control is, ultimately, the most important point in diving, making its' relationship to yoga significantly closer than I had imagined.

Breath control in diving allows one to literally rise and fall with inhalation and exhalation. Essentially, I can rise several feet or even meters in the water by breathing in deeply and then executing a slow release. Shallower breathing means less rise and fall. By making the most of this breath action, a minimum of actual energy and movement is needed to move through the water. Breathing to rise and fall, kicking to move forward, fin pivots (executed by internally or externally rotating the leg) for maneuvering. Hands should be tucked in to the chest and used only to hold in place, or ultimately, not at all.

But there's another trick to breath control. Scuba regulators work through mouth breathing. While diving one does not breathe in through the nose. However, breathing out through the nose is used for clearing masks fo stray water, or to relieve pressure within the mask as you go deeper (a woman I dived with, Eva, did not properly clear the presure in her mask, and had the worst case of mask squeeze I have seen - slightly blackened eyes, and many many broken blood vessels within the whites of the eyes themselves. In fact, they were almost completely red.) Regardless, divers speak of 'sipping the breathe', because the regulator will give you as much air as you request. So, if you breathe deeply, it's a little like being inflated in a cartoon.

So ultimately, breathing in diving is a very sophisticated operation. The better your breathe control, the less energy you use and the less oxegyn as well. I did however spend some very special time at my safety stops ( a pause at 5 meters for 3 minutes, say, to reduce the risk of decompression sickness resulting from too much nitrogen in the blood, otherwise known as the bends) floating neutrally buoyant in lotus postion. Total magic.

kisses from paradise.brett

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