Well, lets just say that the INSANITY WORKOUT program is exactly that...INSANE. I started approximately a month ago and I am here to tell you that wow, it is an ass kicker. I will also tell you up front that I don't like the program. That is not to say it doesn't work but more to imply that I don't like it because it is tough. I have been in need of a tough fitness routine for a while and I think this one is the jolt I needed to get some results. I am definitely not a fan of the cardio abs, simply because it makes my lower back scream by the time I am done. It is only 15 minutes or so but man does my lower back feel so tight afterwards. I am going to finish the scheduled workouts and hopefully at the end at least my fitness will be better. My diet isn't the greatest but I am human, and make mistakes often. Hope you enjoyed my initial thoughts on the program.