sleepless nights

I think it's funny how I can be so tired that the morning person in me has wanted to sleep in the last few days but when I tried to go to bed at an earlier time tonight, I've laid in bed for hours, unable to fall asleep. What is my body thinking? I know I need the sleep, but after laying here for this long, it makes me want to take a break from trying to sleep and be productive. And I'll be fine to wake up early tomorrow morning and go through my day with a normal energy level, no matter when I finally fall asleep tonight. Go figure...