Yea, Byron has a pretty complicated sytem of breathing. I understnad what he is saying, but don't really duplicate it exactly. I think it is good to exhale and inhale from the diaphram. I don't howver exhale before drawing to the point of almost passing out. I do exhale before the draw however. I inhale and draw, then hold and release before exhaling. I think Welsch points of having some sort of consistant pre-draw routine (including inhaling and exhaling) makes a lot of sense.