Do you have any sleeping quirks?

I sleep on my side and I have to sleep with a pillow over my head or use part of the blanket to cover the exposed ear and eye, but not my mouth; I do have to breath after all, and with one leg uncovered but not hanging over the bed. That gives me the creeps. If there is someone or something lurking under my bed it could grab my foot or leg if I let it hang over the bed. Well, it could you know.