[M]y doctor... told me, "A breathing class could help." ...strengthen my failing lungs, calm my frazzled… — 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.

[S]omething happened. ...[I]t was as if I'd been taken from one place and deposited somewhere else. It happened in an instant. ...I had somehow sweated through my clothes as if I'd just run a marathon.