Apnea is all about conserving energy, moving as less as you can and as efficient and you can. That said, have you ever watched an apnea competition? When reach

Apnea is all about conserving energy, moving as less as you can and as efficient and you can. That said, have you ever watched an apnea competition? When reaching the surface, athletes are required to say "I'm Ok" and do a sign with their hands. Some times they can't do that because they're in a hypoxia state and very close to pass out. it's not a situation you want in a contact sport.