What can you expect from a workout dubbed Insanity? Do you really have to be nuts to try "the hardest workout fitness program ever put to DVD," as its website describes it? Probably not, but you have ...
If you need a reminder of how incredibly popular the Insanity workout — a super-hard, DVD-based workout created by celebrity fitness trainer and choreographer Shaun T— was back in the late 2000s, how ...
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