like peachmist i get it a lot, most nights in fact, i too put it down to my mind telling me it's time to turn over or that i have slipped down flat. what makes it worse my arms spasm at the same time so it takes an hour before i can reposition myself. i don't mind it because it proves i am still alive as my biggest fear is having an asthma attack in my sleep and not being able to administer my meds!