Photograph By Brian Bielmann/Red Bull Content Pool
The biggest challenge is staying calm in a wipeout. It's hard to relax because it's so chaotic. You have to hold your breath underwater for a while -- however long that is, it feels tripled. If you're panicking and still not up, you'll see black and white dots from a lack of oxygen. Your brain is telling you to come up for air, but you can't.