• P90X 3-Phase Nutrition Plan designed to help you lose fat while maintaining high energy levels.
• P90X Fitness Guide packed with valuable fitness information to help you get the most out of your program.
• "How to Bring It" video for a quick overview of the complete P90X Extreme Home Fitness training system.

Meet Tony Horton, the Master of Motivation behind P90X®, the #1 fitness infomercial in America. If you want to improve your health, physique, and lifestyle, then you want Tony. Over the last 17 years, Tony has acquired and perfected his fitness expertise, which he's shared with thousands across the country. From professional athletes, sports teams, movie stars, and recording artists to the everyday Joe and Jane, Tony has helped people turn their lives around with the perfect mix of encouragement, humor, discipline, and fun.

Touted as "Hollywood's favorite nutritionist" (Elle), "the queen of lean" (GQ), and "the diet diva" (Vanity Fair), nutrition and diet consultant Carrie Wiatt joined Beachbody® to serve as the nutritional advisor for the comprehensive P90X fitness program. Her passion is sharing the benefits of healthy living with clients. Carrie's Los Angeles–based company, Diet Designs, has attracted a roster of celebrity clients that has included Salma Hayek, Neve Campbell, Matt Damon, and Dennis Quaid. Carrie holds a master's degree in food and nutrition.

Mark Sisson has spent the past 20 years researching and writing about fitness, health, and nutrition, and has applied that knowledge to designing the perfect blend of supplements to safely and naturally enhance the results of your P90X workouts. He has written more than 50 articles for top fitness magazines and authored numerous books. He placed fourth in the 1982 Hawaii Ironman Triathlon and fifth in the 1980 USA National Marathon Championships. Mark has a degree in biology.

Designer, filmmaker, and musician, Ned Farr's broad vision for the look and feel of the entire P90X system helped make this one of the most entertaining and complete fitness programs ever devised.

Pushing the team to raise the bar for what we can expect from a workout video, every detail—from the on-screen graphic treatment to the look of the routines—was scrutinized and refined by Mason and his editorial partner Rick Sebeck.

At the request of customers who wanted more after graduating from Beachbody's Power 90® program, we decided not to just offer a modest new level of fitness, but to raise the bar for every in-home program ever created. "Power 90 Extreme" morphed into "P90X," and from fitness to nutrition to supplements, no angle was overlooked.

Two words: Muscle Confusion. By providing an extensive variety of different moves that take time to master, P90X is continually challenging the body's muscles into new growth. The more you confuse the muscle, the harder your body has to work to keep up; the more variety you put into your workout, the better and faster your results will be.

The flaw with many fitness products is that they all lead to a "plateau" where the body becomes accustomed to the routines, resulting in diminished effectiveness. P90X avoids this plateau effect by switching things up to keep the body guessing for the entire 90 days. Which means IT NEVER GETS EASY. By breaking old routines and opening new doors, secondary and tertiary muscles are constantly being activated and developed.

You can expect to develop skills, coordination, and flexibility you never dreamed possible. You can expect to sharpen your knowledge of smart eating and discover healthy diet choices. And you can expect to sweat. A lot.