Floating has been around for over 60 years and has a wealth of published research to back it up. No new age nonsense!
It is similar to what you see in Altered States and Stranger Things, but you’re not submerged in water, you don’t eat ritualistic mushrooms, and only a small percentage of floaters turn into proto-human monkeys or see demogorgons. The Simpsons also did a great bit on floating!