Sweat Science: Don’t Waste Your Breath

Pararescue specialists—known as PJ’s in the military—are the most elite unit in the Air Force. But if you want to be a PJ you have to make it through Indoc, a brutal nine-week training course that’s designed to test your motivation and resolve. And there’s no easier way to make someone uncomfortable than sending them underwater for a long, long time. Staff Sergeant Travis Morgan had spent what felt like his whole life preparing for Indoc. He knew that only a small percentage of candidates made it through the program, and that most people quit during pool training. What he wasn’t expecting was to find himself facing elimination because he could hold his breath way too long.