sleep eludes me...

I feel my heart beat get stronger, my stomach begins to tighten, I toss and turn, and suddenly I'm staring wide eyed at the ceiling and become very aware that sleep is not coming any time soon. Does the late hour break down the barriers in my mind and let things that had been shoved to the unconsiouce seep out... or is my mind just so bored that it needs to find something to occupy its time? I'll be half asleep in front of the computer, but the second my head hits the pillow I'm wide awake. Maybe when this term is over my mind and body will calm down and I can get on a normal schedule again... one can only hope...