And what about people like David Blaine or Tom Sietas? Sietas held his breath underwater for over 22 minutes (world record). I know they train for it like months and even years, but doesn’t holding your breath = no oxygen to brain?
Permanent brain damage apparently occurs just after 4 minutes of lack of oxygen to the brain, so why are freedivers left generally unscathed after 8 or 10 minutes without air?
In: Biology
Your blood has oxygen in it. You have a lot of blood. You do not use up all the oxygen immediately. Picture a teabag placed in a cup of water. It takes a while for all of the tea to get infused into the water, it doesn’t just instantly turn the water into tea.
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