My first float yesterday was amazingly effective. If you are an introspective, meditative & exploring kind of person (as I am), I absolutely recommend this experience. I totally relaxed. My ouchy knee feels better & I slept for 10 hours (still got up twice for the bathroom--I'm 63!) but zonked out again quickly, instead of trying to quiet my racing mind. Loved it; wish it was cheaper; I'd go twice a week minimum if I could.