For the last year I do a nightly cover dance. I wake up sweating my butt off. Throw the covers off, go back to sleep. Wake up cold, pull back covers. Get hot. Stick a leg out, not enough still hot. Roll to a cool spot. Better. Get hot again stick both legs out, bit cool. Stick arms and half of the other leg. OK. Wind up with sheet wrapped around waist and bum to find happy medium. Repeat next night, and the next and the next.
People ask, why are you tired? Remind myself not to strangle them, smile and say something polite. Repeat until death.