my boss does p90x and he is freakin ripped,I got the ab ripper x program from him and ive only been doing it for 2 weeks now and can notice great results already,This stuff is no joke,it will hurt you(in a good way) but it works like crazy,it will rip you man,stick to it,im honestly thinking about quitting the gym and just doing this,im just scared i wont have the motivation to do it by staying at home like i do going to the gym. ..good luck tho man