I found out later that these clicks are actually used for communication. These animals also use them to see in the deep ocean. ...It's a form of call… - James Nestor

[C]oaches in the 50s used to have their runners take a... mouthful of water, run around the track and then spit out that same amount of water... to force them to breath through their nose.... to move their diaphragms... more, because breathing is so essential to their recovery... endurance, and performance.

[B]est of all, divers will tell you, "It's open to everyone."

[B]reathing has to be considered along with diet and exercise as a pillar of health, because even if you eat keto, vegan, paleo, whatever. Even if you exercise all the time, if you're not breathing right, you're never going to be healthy. We know that to be the truth.