With the arrival of P90X^®+, many of you might be wondering how we could improve upon the "most extreme home fitness system ever." The simple answer is, there's always new training, new techniques, and a new way to look at things to take them (and you) to the next level. P90X is the step from fitness to extreme fitness. The Plus takes it to yet another level. Our focus was to give you more options to maximize your fitness experience. P90X⁺ is not trying to top the X but to enhance its efficiency for those who have reached the peak. Let's take a brief look at the science behind P90X and why you'll want to add X⁺ to your home fitness arsenal.