P90X is a amazing system of twelve different exercises created to give you the muscles you wanted in only 90 days. With extensive muscle building exercises to take you from flabby to ripped. The theory behind the process is an newly developed training method called Muscle Confusion which constantly creates new moves and exercises for your body so you never plateau. Whether you want to lose weight, gain muscle or get ripped there are an unlimited number of ways for you to do so following the p90x regime. P90Xlasts for twelve weeks and is split into three phases. Each phase consists of 3 weeks of hard workouts, followed by one week of recovery workouts so your body can rest. The next month starts over again, but with different DVDs in a different order. The workouts consist of six days a week, with a day of rest or the option of doing the stretching dvd.