I gave it a try for the first time and left on the edge. At one point in time I was completely relaxed and fell asleep. There were a few things that kept bugging me that left me questionable. I have really sensitive eyes and kept getting the water in my eyes and it burned like crazy. After a few times of rinsing my eyes with clean water, I was unable to completely relax again. Needless to say, I will definitely be trying it again, maybe with goggles.