Start out on my back, feet sticking out from under the covers (my feet are usually too hot, at least in summer). At some point I turn over and sleep on my stomach. Critters sometimes nibble on my fingers; I move my hands under the covers if they wake me up.
We
finally got a ceiling fan two years ago -- I find it very hard to sleep without moving air (unless it's the dead of winter). We also got a
latex foam mattress after our old inner-spring jobbie died -- it's infinitely better, and will last 20+ years.
Oh, and I wear scrubs as PJs.