Well, if you watch this video...it seems pretty real. But does it work?
So I guess it's only a matter of time until we find out if these peeps actually have a set of DVDs to sell us, and then find out if it really works, or if it's another passing workout fad. Cue Billy Blanks.
Really though, I always think that people should work out however they want. Whatever you want to do that gets you moving, gets your heart pumping...do it.