I was channel-surfing early one morning when images of sculpted bodies working out together caught my attention. It wasn't the first time I had seen this Insanity infomercial, but it was the first ...

Ready to press play on 'Insanity Plyometric Cardio Circuit' on your favorite screen? Finding where to stream, rent, buy, or watch how to watch this film can be harder than it should be so we at ...

Shaun T mixes it up with the insane upper body weight training. This bonus video helps you get to that insane peak performance in the gym!

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? With countless ways to mix it up, this type of training is an efficient way to ...

Ready to get back into shape? Circuit training is booming across the fitness world! Discover how it works, its benefits, and why it’s so effective. Although circuit training originated in Leeds in ...

Circuit training involves quickly rotating through a series of exercises targeting different areas of the body. You can do it at the gym, at home, or during an exercise class. Share on Pinterest Getty ...