Mentally awake, physically tired

I write this post, in a desperate shape. I'm mentally alert, couldn't be better in fact. I'm mentally wide awake, on the ball, sharp as a needle. Yet, my body is crying, kicking, screaming at me, to get some sleep.

This wouldn't be too bad, were it not for the fact that I want to listen to some if not all of the Oilers gane tonight. I guess if I fall asleep now I may wake up. I doubt it, but hell why am I in such a desperate shape? I mean why isn't my body shutting down and getting ready for sleep? On the other hand, why am I physically tired? I've done nothing to justify that within the last 24 hours.