Actually, the p90x program seems like it could be pretty hardcore to me. Ive seen some of the videos, and I can only best describe it in laymans terms as aerobic strength training. I was surprised to see some of the really core exercises for strength being incorporated into what I expected was just another tae bo type video series. From the brief time I had to skim through the dvds, alot of the essential exercises are mixed into the intense cardio sessions, including curls, rows, shoulder press, pushups, pullups, chinups. Obviously this isnt a true strength training program with heavy deads, squats and benching, but I wouldnt totally dismiss the principals and theory behind the making of these dvds. I think with some tweaking, many of these 1 hour long workouts could be successful added into a regular training program to actually ramp up the gains being made or even help push past a stagnation point by adding some diversity. Im not saying its the miracle that some people are claiming, but I am genuinely intrigued by what I saw, and I will be doing some research on this program myself to really explore what its all about. If nothing else, the dvds are for some people cheaper than joining a gym, cheaper than a personal trainer, and more reliable than a training partner who doesnt always show up, plus the fact that the dvds are always there, ready to be run, might also help some people who have weird schedules.