Based on the article published in American College of Sports Medicine. It features 12 exercises deploying only body weight, a wall and a chair.
From: http://www.lifehack.org/articles/lifestyle/master-the-7-minute-workout-with-this-video.html
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From: http://www.lifehack.org/articles/lifestyle/master-the-7-minute-workout-with-this-video.html