Didn't anyone you know pass out from exerting themselves with a mask? Or do you not know many people? You don't have to pass out for it to starve your brain.
Prolonged oxygen shortage from masks have done permanent brain damage... unused brain sections have died in everyone who wore them 8 hours a day.
Didn't anyone you know pass out from exerting themselves with a mask? Or do you not know many people? You don't have to pass out for it to starve your brain.
Prolonged oxygen shortage from masks have done permanent brain damage... unused brain sections have died in *everyone* who wore them 8 hours a day.
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