It was an interesting experience it was a class of like 75 people. My friends who have done it before told me it is a much better experience in a much smaller group. It was relaxing, but I didn't feel as much as I think you can if done in a better environment. No I haven't! But one of my friends who was also there said he listens to that kind of stuff to help him fall asleep. I don't usually have trouble sleeping at home in my bed. Now when traveling or camping that is a different story lol.