Fire Marshall Bill
Let me show ya somethin!!!
Chicken and waffles is where it's at.
That's why they're a potato chip flavor now. Can't remember if it's Lays or something else.
What's the purpose of P90X? Is it for gaining muscular strength/endurance or for losing fat? What are the goals of the users of P90X?
I haven't looked at this extensively, but to me it seems to cater to people who want to lose fat. If it promises more than that (and if I remember the adverts correctly, it does), I take issue with it. If one wants to gain muscle mass or strength, then he or she should weight train. P90X is not going to add muscle mass outside of small "beginner" gains. My reasoning behind this is simple: for optimal muscle growth and development, a person needs to consume a caloric surplus, and a user of P90X is instructed to eat less than what's desired.
What about weight lose? There are many, many aerobic and anaerobic exercises in which one could engage in to lose fat. Walking, swimming, running, etc. are all good ways to lose fat. Compound this with a calorie-conscious diet, and it would be effective in helping one lose weight.
I'm looking at this from a relatively ostensible perspective, but I think there are more conventional ways to fulfill one's goals than P90X. If one wants to gain muscle mass/strength, then he or she should weight train. If one wanted to lose fat, he or she should exercise and eat healthily (and below his or her caloric needs).
P90X, at least from my current perspective, isn't necessary.
P90X actually has very good reviews and I know people who have succeeded in getting in better shape because of it. It's principal factor is variation. It has you do everything from Yoga to strength training to cardio. It comes in several DVD's and you're supposed to do them on a schedule for 90 days straight. Each week is supposed to be different than the previous as to "confuse" your body and muscles. I would recommend it to anyone who doesn't exercise regularly.
That last sentence is, in and of itself, why programs like P90X and others do work so well to those who stick with them. Most of these programs are aimed at lazy people trying to get in shape. Anyone with any real motivation or current workout program generally has enough knowledge to do something more aimed at their specific goal. That said, if you're not in shape, P90X is a great beginners tool to work towards that goal. I know people who've done it for the 90 days, took a week off and then started again. The nice thing about that program is A) it's hard to do everything they do on the DVD's, so 90 days might not be enough time to catch up B) if you do catch up, you can do more than they count on each exercise.
They also came out with a P90X 2, but I haven't heard a thing about it.