Dafaq https://twitter.com/TribunalReport/status/1106416549009780742?s=19
Second video he said he dropped it right when he went in. No doubt training can help you with breathing. But breathing like that, smooth, calm, controlled. That's not his first time. Thats experience and only experience
The breathing was to smooth for a first time. That will suck the air out of you and stuff cotton balls in your mouth