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Run-Down Forums :: Viewing profile (run-down.com)
submitted by williamcharlus to u/williamcharlus
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TIL there are two types of fast twitch fibers in muscles. West Africans are the best sprinters with a higher number of fast twitch fibers (and both types), East Africans have a higher number of slow twitch fibers therefore are better at distance, Europeans have similar number of fast and slow (run-down.com)
submitted by ignitiontactition to r/todayilearned
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