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Insanity is a great work-out, however if you might be seeking to bulk up and gain muscle mass, this may not be the work out to suit your needs. You will be better off going with P90x or the brand-new upcoming Body Beast workout. Which work-out you decide to pursue basically just depends on exactly what your goals are. http://www.fizzlive.com/member/239070/blog/view/243810/ insanity workout http://www.blogymate.com/post.aspx?blogid=3995904&t=Will-The-Insanity-Work-out-Build-Muscles download …

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