Ab Crunch: Looks, Form and Function

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The rectus abdominis, or abs, are the muscles many of us would like people to see when in a bathing suit. And besides the aesthetics aspect, they are also an important muscle group for function. The ab crunch machine trains the abs as well as another pair of important muscles. However, performing this exercise requires attention to detail. There is a small difference between proper execution and lower back strain with the ab crunch. In this infographic, well discuss all of those details.-www.ThePerfectWorkout.com