Everybody is talking about P90X. From mom's in supermarket aisles to the local fitness trainers, from folks watching late night TV to the latest chatter on the internet as people discover ever more success stories. P90X is without a doubt the most successful at-home workout in the country, selling millions of copies and followed scrupulously by people everywhere. From celebrities like Demi Moore and Ashton Kutchner to quarterbacks and NBA players, P90X has become ubiquitous in our culture. Odds are you're ready to give it a shot, but if so, what do you need to maximize your gains and ensure you have the best returns possible?