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Reverse Crunch Demonstration | Nerd Fitness

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Published on Jul 12, 2010

https://www.nerdfitness.com/?utm_sour... - Create your Free Character and download these 3 books free:
-15 Mistakes Newbies Make Getting Healthy
-The Beginner's Guide to the Paleo Diet
-the first chapter of my book, Level Up Your Life

Attempt this exercise at your own risk, and always consult a physician before beginning any physical activity.

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