What is it about beds at night? During the daytime a bed seems harmless enough. You can take a nap in one on a Saturday afternoon without waking up wondering how much longer you have to live. You can work a crossword puzzle in one while you are getting over a bad cold without worrying about who will take care of you when you live past all sense and usefulness. But wake up in bed in the middle of the night, unable to go back to sleep, and you can be in for a real workout.
