I'm digging around for an article I read. There was a study done where they actually put people through breathing exercises for a series of weeks. There were 3 groups.. all I remember is that one group actually wore an apporatus that restricted their air flow somewhat. Their performance was affected but at the end of the study that groups V02 max actually increased. Just goes to show how well ou bodies can adapt over time. I'll post the link if/when I find it. Anyone else see that study?
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