P90X DVD Workout - Base Kit Get lean, bulk up, or grow stronger, with an endless variety of mix-and-match routines to keep you motivated Muscle Confusion technique accelerates the results process by constantly introducing new moves and routines so your body never plateaus Collection of 12 highly diverse and intense DVD workouts across 12 DVDs Also includes a comprehensive nutrition plan, workout calendar, fitness guide, and How to Bring It DVD with an overview of the P90X system Personal trainer Tony Horton will keep you engaged every step of the way