An REM rebound is when you get REM at times when you normally wouldn't. Eg. within 20 minutes.
In other words, I do dream.
But I don't remember that much of it, except when I WILD. Yes, I can WILD easily like this. But I don't really like WILD's - I prefer DILDs. WILD's have me feeling like I'm going to wake up any second.

Anyway, I'm taking a month's break from pure polyphasic sleep. Previously I've had a month of successfully following it, but recently I eg. do 3 or 4 days and then crash. That's not healthy.
But the break isn't going to be monophasic (eg. 8 hour a night) sleep. I couldn't bring myself to waste that much time again.
I'll do 4 hours at night and 2 or 3 naps in the day.
If that doesn't work, I'll do 4 hours and then 1 hour siesta.
If that doesn't work, I'll do 5 hours and 1 hour siesta. And so on.

BTW, this should ideally be in it's own topic... I'll split it soon, when I get a chance