My friend actually basically never dreams. She has a few dreams now and then. I used to think it was just about remembering dreams, because you need to at least wake up shortly after a REM phase to remember that you dreamt. She is a sound sleeper so I took for granted she just didn't remember because of lack of wake ups. Came out she actually doesn't dream much at all. You can wake her up at any time, and by chance, one of those would be dream sleep but it never happens. I should add she also has a brain damage so maybe that has something to do with it as well.