I have done several prenatal classes prior to using this video. I enjoyed the classes a lot and they made me feel so good, so I want to do them at home (because it's cheaper and I can do them everyday).I tried this video, and the first time I used it, I felt slightly dizzy. The second time - I actually threw up. All that constant moving of the head makes one nauseous specially if you're pregnant. I'm already in my fourth month and I haven't had morning sickness, and since I'm in my second trimester, I don't expect to, but the movements in the video gave it to me. Also the poses are not so helpful; it's all constant moving and chanting, which is not really what I was looking for. I will try the other video which are better rated and hope that it will give a more similar experience I had with my actual pre-natal classes.