The name alone is a challenge—a dare. You’d have to be insane to attempt this workout. Of course, that’s a big part of the appeal. If the exercise is “extreme” or “crazy,” you assume ...

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 ...

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 ...

In 60 days, he lost nearly 40 pounds and got abs as tight as Ebenezer Scrooge’s pocketbook. Butte High graduate Quentin Case claims it isn’t crazy — it’s Insanity. Case, 25, will ...

Add a few back exercises into your regular lifting routine to save time and improve your results. Visit Insider's homepage for more stories. If you're hitting the gym to prepare for summer, ...

And although there are many back muscles, big and small, you can train your entire back with just three compound exercises. Try 3-4 sets of 8-12 reps and progressively add weight, ...