Saw this on FB and it fits into a previous topic elsewhere (not that I can find it)SHRODINGER'S NAP: Where you are both too tired to doanything and too awake to sleep so you just lie in bed with your eyes closed and suffer.
i think it happens to everyone eventually. i drank, probably, a little too much beer, whisky & wine this eve so might be awake too early. if so i'll take a diazapen & read for a while.