90X Extreme Home Fitness Workout Program – 12 DVD + Nutrition and Fitness Guides

The secret behind the P90X system is an advanced training technique called “muscle confusion,” which accelerates the fitness process by constantly introducing new moves and routines so that your body never plateaus and you never get bored. The more you confuse the muscle, the harder your body has to work to keep up. And the more variety you put into your workout, the better and faster your results will be. By breaking old routines and opening new doors, secondary and tertiary muscles are constantly being activated and developed.