It's definitely working for me! I have been doing the dvd's for about a month, a few times a week. Not only have I lost weight but I can see my body changing and my stomach muscles feel hard. I also feel much fitter.
I'm not even close to getting bored of doing the dvd's and I actually kind of crave it if I haven't done it for a day or two. It's the best money I've spent in a long time.
I promise I'm not getting paid to say all this