[S]omething happened. ...[I]t was as if I'd been taken from one place and deposited somewhere else. It… — James Nestor

"There are as many ways to breath as there are foods to eat," said one... instructor... Another diver told me that some methods of breathing will nourish our brains... others hasten our death.

I looked for... verification... recent research in ... but found next to nothing... breathing technique wasn't important. ...Pulmonologists work mainly on ...maladies of the lungs ...collapse, cancer, emphysema.

Seven books of the Chinese Tao dating... to around 400BCE focused entirely on breathing... Even earlier, Hindus considered breath and spirit the same thing, and described elaborate practices... to balance breathing and preserve... mental and physical health. ...Buddhists ...use breathing ...to lengthen their lives [and] reach higher planes of consciousness. Breathing... for all... these cultures, was powerful medicine.