Hi Kristie, just this morning I did Bryan's first volume (Energize) and I feel better. I absolutely love all three videos, because they do work your body in a different way. I did not like the yoga zone tapes or the yoga from Patricia Walden because I don't feel they move anywhere near Bryan's. I like to feel that I've acomplished something during that time I've spent working out. To answer your question, it hasn't helped me lose wieght, but I feel that I work my all my muscles in a different way. I went to a 4 hour full Primary Series workshop, and it was so intense and hot in the room that I couldn't finish the entire primary series. The sweat was just pouring off of everyone, I was exhausted after that. I started going to a yoga studio and the teacher told me I would have to stop doing wt. training, if I wanted to get the full benefits of yoga, so I stopped going. I'm not ready to stop my wt. training, or anything else. I like doing a variety of things, but I have many friends who only do yoga now, have lost weight, feel great, and think it's the best thing they have ever done. They certainly don't miss the weights, When I get down to my ideal weight which is 10lbs away, I will try to do yoga every day, and see if it works for me. Hopes this helps.