30 Jul '12, 8pm

WATCH: A cute video explaining how altitude training works. #runnerds

At least a solid minority, if not a majority, of medal contenders in the Olympic distance races have trained at altitude in recent months. Why do they bother, given that their hard workouts and even daily runs will be slower than if they were to train at sea level? The charming video below explains the basics of altitude training, including altitude-simulating chambers in houses that allow runners to train at normal speed at sea level while spending their sedentary hours up in the clouds.

Full article: http://news.runnersworld.com/2012/07/30/watch-how-altitud...

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