Okay, I read all the reviews before I bought this video and I was pumped up about getting it and working out. However, I was disappointed in a couple of ways. Please read what I have to say because I am not totally dumping on the workout as it is pretty good. I have a 2nd degree black belt in TaeKwonDo myself and I run 7k about 3-4 times a week as well as lift weights - so I am no wimp! Number one, for the money, I really expected a more professional production from the video itself. The cutaway editing done in between each workout segment does not make for adequate time to drink a sip of water or wipe yourself with a towel - not even for a second! Secondly, the workout set itself seemed 80ish and the girls in the background are dressed oddly. They just look like they have never set foot in a gym in the 21st century! However, I know that is not really true because it shows their names and TaeKwonDo degree in the credits. It just doesn't seem like they had a very good production/editing/direction team. Onto the workout, it is a pretty good workout and he goes pretty fast so it is a bit tough to follow at times. He does do a little instruction in the beginning, but with my background, I felt that for the "beginniner to imtermediate" exerciser, it really was not enough instruction to be safe at the rate he does the exercises in the video. I have Kahty Smith's AREOBOX video and found it to be just as tough - if not tougher - a workout and much safer in its instruction as well as segways between each exercise segment. All in all, it is a good workout if you can pause the video so you can catch your breath in between each segment and if you can focus on getting the exercise correctly in the beginning before trying to keep up with him. Otherwise, you may hurt yourself. I was pretty surprised at all the reviews that talked about how safe he was in this respect once I tried the video. Lastly, it was interesting to me that nobody talked about the instructor being irritating himself. I found him funny to watch when he talked because he looked like a used car salesman with his head and hand movements and the cadence of his voice and emphasis he had on "personal power". So if you can ignore that, along with the video production/set, bad looking girls in the background, and no seconds to spare in between each workout segment, you have a pretty good workout. haha - I think there are probably better videos out there for the money. I think this one should have been less expensive for all its "problems". I recommend Kathy Smith's AEROBOX video -- but I think I might try Larry Lam's XKO Kickboxing next.... :)