I dunno, my dorm room is pretty bright cause of a streetlight outside and I nearly always dream. But I am also a weird sleeper and I have lots of dreams and usually remember them.I read recently that it has to be absolutely dark for us to dream, and that's hard to come by. If there's a computer or even a clock in your room, a night light or a plug in room deodorizer, that's too much light. So I got one of those sleep masks and sure enough, I dream now and I didn't before. My sleep is more restorative and I don't wake up hung over from poor sleep.
