After years of staying up very late, I'm trying to get my body back to a 9 to 5 life. But over the last few weeks, I wake up, check the clock and see that I've only been asleep for a couple of hours. I feel like I've been in bed for five or six hours, only to find that isn't the case. Naturally, I never seem to sleep quite as well over the next four or five hours. I'm not sure what my body is telling me...