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 ...

Before his “Insanity” workout caused users around the country to huff and puff, Shaun Thompson excelled as a professional dancer. His first fitness program was “Hip Hop Abs,” and he’s also developed a ...

If you're starting a workout program that calls itself "Insanity ® by Beachbody," you know it's going to be over the top. This is one of the most challenging fitness programs on the market. Insanity ...

Shaun T. is the mind behind the viral "Insanity" workout. In his new book, "T is for Transformation," Shaun talks about what motivates him to exercise. Shaun told Business Insider that you shouldn't ...

Seriously. Mr. T shows zero mercy. If the program is 50 minutes long, he'll give you maybe 2 minutes total to rest, wipe up the pools of sweat under your feet, and sip some water. The rest of the time ...

Insanity came by airmail, bound like a prized first edition. The first time I tried it, it didn't seem too bad. A little sore in the thighs maybe, a little weak in the hip flexors, but nothing ...