ABC News May 13, 2013

'Brutal' 7 Minutes a Day May Be Enough for Beach Body

Name: 'Brutal' 7 Minutes a Day May Be Enough for Beach Body
Uploaded: 2013-05-13T14:48:21
Duration: PT172.639S
Description: Researchers suggest short workouts at maximum capacity can help build muscle efficiently.

Researchers suggest short workouts at maximum capacity can help build muscle efficiently.

'Brutal' 7 Minutes a Day May Be Enough for Beach Body

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