P90X Cardio X is a workout you will only do a couple times during the 90 days of P90X. The first time you see the Cardio X workout is after the first 3 weeks. Tony Horton gives you one week off to do more of a cardio week. No weights, just a lot of stretching and high intensity cardio workouts. Cardio X is a quick little workout which will get the blood going. It is a great workout to do in the morning or if you just do not feel like going outside or lifting any weights.
Tony Horton will push you in the workout. It is very similar to the Plyometrics workout but you are not jumping around as much. You will be doing a lot of lateral moves and push ups. Some of the exercises are kind of goofy looking but are very beneficial to your health. I like to think of the P90X Cardio X workout as a tune up for Plyometrics. If you cannot do Plyometrics then you need to build up your endurance and strength by doing the P90X Cardio X DVD. This is another great workout to do with friends or a workout partner. If I know that I will be having a sporting event later on that day I will do the P90X Cardio X workout just to get loose and be warmed up before my game later that night. You will not do the Cardio X workout that much during the 90 days you do P90X but you will gain a lot by doing it. You may not get the wash board abs like Tony Horton but you will see big gains in your cardio performance.