Scott Adams the creator of Dilbert has written an amusing post on nocturnal arm numbness.
Do you sometimes wake up with what feels like a log attached to your shoulder, only to find you have been lying on your arm again? I do quite often.
Unlike Scott Adams, I don't worry about it coming back to life again, although I always give it a shake in case a finger falls off and there might be time to rush into A&E and get it fixed back on again.
Well you never know.