P90X and the Supreme 90 Day workout are advanced, 90-day fitness programs designed to help you lean down and get ripped. They have the same basic program design, and both programs include a nutrition component. The P90X program offers more workouts and some extra features; however, the Supreme 90 Day program is less expensive and doesn't take up as much of your time per day.
Although each program is made by a different company, the designs of the P90X and Supreme 90 Day programs are very similar. Beach Body produces the P90X program, as well as other popular fitness programs, including Insanity and Turbo Fire. Telebrands, which created the "As Seen On TV" logo and sells a large variety of infomercial products, makes the Supreme 90 Day program.
Both products are 90-day programs broken into three cycles of 30 days each. You work out six days per week, 30 to 90 minutes each day. On average, the P90X workouts are longer. The longest Supreme 90 Day workout is 60 minutes, but P90X has a 90-minute workout. On the days you do P90X strength-training workouts, which are 40 to 60 minutes, you also do the Ab Ripper X workout, which adds another 15 minutes to the session.
The P90X program includes 12 workout DVDs, while the Supreme 90 Day program includes 10 workout DVDs. Both programs have the same five strength-training workouts: "Chest, Shoulders and Triceps," "Shoulders and Arms," "Back and Biceps," "Legs" and "Chest and Back." Both programs also have a core workout DVD. The P90X program includes a cardio workout, a martial arts style workout and a plyometrics workout. The Supreme 90 Day program includes a cardio workout and a Tabata interval workout. Tabata intervals consist of 20 seconds of intense exercise followed by 10 seconds of rest. The extra workouts for the P90X program are a stretching workout and a yoga workout.
Both programs require some extra equipment, but it is minimal. You should have a mat, water and towel at every workout. P90X requires a pullup bar and dumbbells. However, if you don't have access to a pullup bar, you can use resistance bands to do pulldowns. The Supreme 90 Day workout requires dumbbells and a stability ball.
Both systems include a nutrition component; however, the P90X nutrition guide is more detailed than the Supreme 90 Day guide. The P90X nutrition plan is broken into three phases: Fat Shredder, Energy Booster and Endurance Maximizer. Each phase has a specific macro-nutrient breakdown and daily caloric goal. The P90X nutrition program provides five detailed meals for every day of the program. The Supreme 90 Day nutrition guide includes a food guide and nutrition tips, but it isn't as detailed and doesn't break the program down into daily meals.
P90X and the Supreme 90 Day program emphasize muscle confusion as the key to avoiding plateaus. Both programs include a large variety of exercises, and the workouts are cycled so you do them in a different order during each 30-day phase.
The P90X program is significantly more expensive than the Supreme 90 Day program. At time of publication, to purchase the P90X program, you make three payments of $39.95 plus $19.95 shipping, for a total cost of about $140. The Supreme 90 Day costs $19.99 plus $6.99 shipping and handling, for a total cost of just under $27.