We are pumped to share one of our fave stories from Self here on FitSugar!
by Self
We are pumped to share one of our fave stories from Self here on FitSugar!
Between infomercial-style ads for Pajama Pants and Ab Rollers, perhaps you've seen advertisements for P90X DVDs. Or maybe you have a friend who suddenly looked a bit more taut and toned, who casually referenced the muscle confusion-based fitness craze.

The point is P90X is undeniably a major exercise movement. But does it work? A recent study by the American Council on Exercise (ACE) says yes. And here's why.
First, it's obvious why ACE bothered to do this study. The organization loves to investigate the latest greatest fitness trends and, according to them, over three million copies of P90X were sold as of November 2010. And that was a year ago. Who even knows where that number is at now?
Everyone from famously buff Sheryl Crow to Bruce Springsteen has trained with creator Tony Horton, which lends him credibility upfront (especially if you're a Bruce fan from Jersey!). The concept behind this type of "muscle confusion" is that the body burns more fat and builds more muscle if you mix up your exercises so regularly that it never gets comfortable with any single one. For one thing, you're dodging that dreaded plateau.
"The basis of muscle confusion is to keep the body from becoming too efficient at performing individual and sets of exercises," explains Alice Burron, MS (Exercise Physiology), American Council on Exercise National Spokesperson and ACE Personal Trainer. "This type of inefficiency burns more calories because the muscles haven't yet adapted to the new workload. Overall more calories are burned, and as a percentage, then, more calories are burned from fat. That is, if a proper caloric intake is maintained in tandem with the workout."
Find out just why P90X is so effective after the break.