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 ...

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 and what he does when his body doesn't need a ...

The Insanity workout is an advanced exercise program. It involves bodyweight exercises and high-intensity interval training. Insanity workouts are performed 20 to 60 minutes at a time, 6 days a week ...