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PRECISELY Wishiker! :: standing O ::
Hatha / power yoga exploits the phenomenon you cite. Slow power movements, pulse under 120, the mind can still process information ...
It mimicks hunting and gathering, calm alertness while moving powerfully. Insanity, P90X, MMA home workouts, they've all discovered it.
Below 120-125, you can think. Above 125, you can't. Guys step in the cage and whale away, breathing heavily, making EXPLOSIVE fast-twitch movements, and can't think straight.
GREAT post.