I don't exercise regularly, so I consider myself a beginner. I've tried working out before with DVDs, and after a few days, I lose motivation and interest. But, I've been wanting to get in shape, and since I've heard good things about Jillian Michaels from various reviews, I decided to give her DVDs a chance. This DVD consists of 6 circuits which are done by three contestants from The Biggest Loser show with Jillian guiding. I've never seen the show so I'm not familiar with which contestants they are. I only made it through the first circuit on the first day and had to stop. The exercises are fun but a little rough, at least for a beginner like myself. However, even though I am sore right now, I plan on exercising with the DVD when I'm not as sore. I'm motivated to keep up with it, and Jillian is encouraging by telling you to do what your fitness level will allow you to do at the current time, but there are other tips that she offers to boost it up a bit when you are ready. All in all, I'm happy with my purchase. The only reason I did not give this 5/5 stars is: - Sometimes when the person is doing the exercises, the camera has a bad angle and you can't really see what they are doing. But after a few minutes, the camera pans out and you can see what the person is doing. - Also, when I was trying to get through the first circuit and pushing myself, not until the very end did Jillian explain that if you were not able to do the exercises as intense as the example, to do it as best as you can for now. I wish she would have mentioned that at the beginning...Oh well. Maybe that is my fault, being a beginner, and not figuring that out for myself.