Comment by skeledrew

It's a bit hard to describe: a kind of extremely worn out and braindead feeling. But that's usually after using it for several hours on end. The brain just isn't designed to be forced into a particular state for extended periods I guess.

My goto was the Gnaural app[0], but it's been a dead project for some time. Still have the app on my phone though, in case I want to do quick dives. There are other implementations and also audio files out there, but I never found anything as good for my use case.

[0] https://gnaural.sourceforge.net/