We get it. You're busy. But we bet you can squeeze in 7 minutes for this quick workout. It's proven to be just as - if not more - effective than working out for hours at a time.
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Sources
The Scientific 7-Minute Workout (May 12, 2013) New York Times Magazine
American College of Sports Medicine’s Health and Fitness Journal (May-June 2013)
Source: BWHIBLOG