Usually on my right side, but sometimes on my stomach or back. I can't just lay out straight on my stomach though, I always have to have one leg hiked up for some reason. Also, I apparently don't toss and turn much, because I normally wake up in the same position I went to sleep in <_<

My bed is quite comfy. And I don't have problems sleeping anywhere else, I could fall asleep anywhere at anytime. O_o