P90X is a revolutionary system of 12 highly intense workouts on 12 DVDs, designed to transform your body in 90 days. P90X includes a ""How to Bring It"" DVD for a quick overview of the complete P90X Extreme Home Fitness training system. To get you started, you will also receive a comprehensive 3-phase nutrition plan, a detailed fitness guide, and a calendar to set your workout goals, track your progress, and stay motivated. Tired of ineffective workouts that sound great but produce less-than-optimal results? Turn to the P90X Extreme Home Fitness system, a bundle of 12 sweat-inducing, muscle-pumping workouts designed to transform your body from regular to ripped in just 90 days. Hosted by personal trainer Tony Horton, the series of DVDs will help you get lean, bulk up, or grow stronger, with an endless variety of mix-and-match routines to keep you motivated. 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. In addition to the 12 DVD workouts, the P90X comes with a comprehensive three-phase nutrition plan, specially designed supplement options, a detailed fitness guide packed with valuable information on how to get the most from your program, a How to Bring It DVD that provides a quick overview of the system, a calendar to track your progress, online peer support, and much more. The DVD Workouts Each of the 12 highly diverse and intense DVD workouts focuses on either a specific set of muscle groups or a unique training technique.