I haven't completed it yet. Hopefully I will this time. I'm starting again tomorrow lol I did it for 2 weeks and there was a noticeable difference. I wish I kept with it. It's pretty hard but you got to push through.
I finished it back in March of last year. It wasn't terribly easy and I got some good results, but it got repetitive and boring. I would end up muting the DVD and playing my own kickass music just to be able to stand it.