Has anyone here ever floated in an isolation tank?

Not tried it yet, but I think it's a matter of having the right mindset going in. One session really only gives you a hint of what it can do. The idea of losing sense of your body can be terrifying to some, freeing to others that allow you to relax or freak out. Someone who has one is currently going to test it against a fitness tracker that tracks sleep. He claims that in a hour you replicate 6 hours of sleep. Wouldn't that be nice.