The result of two years of R&D conducted by a team of the most qualified experts in fitness, P90X2 includes training so cutting edge, so outrageously effective, you'll be blown away by your visible results and your performance. While P90X is based on Muscle ConfusionTM-to break normal 30-day training plateaus so you get results fast-P90X2 ups the ante with a training technique developed by professional sports trainers for world class results: P.A.P., or Post-Activation Potentiation. With P90X2, you get 12 groundbreaking workouts focused on chiseling your body while building your balance, agility, core strength, and athleticism. It includes new customization with an all-new, highly flexible nutrition plan to help you excel. THIS is training. Better training than most pro athletes get. And with an emphasis on your abs/core, powerful athletic function, and lightning-bolt agility, it'll help you blast through your plateaus. In addition to the 12 new workouts, P90X2 comes with a comprehensive three-phase nutrition plan, with vegan and grain-free options; specially designed supplement options; a detailed fitness guide packed with valuable information about how to get the most from your program; a How to Bring It Again video that provides a quick overview of the system; a workout calendar to track your progress; online peer support; and much more. What's in the Box? 14 workouts, nutrition plan, fitness guide, How to Bring It Again video, a calendar to track your progress, a RumbleRollerTM, a 55cm premium stability ball, two 8-lb. medicine balls, and a set of Tony Horton's PowerStands. RumbleRoller is a trademark of Ronald Johnson. PowerStands is a registered trademark of Tony Horton.