My brain is still trying to kill me

See entry on May 14, 2010, where I first make this observation.  This morning I woke up 45 minutes before my alarm went off, though I was sound asleep and there was nothing to disturb me.  Why would I do this?  Of course I couldn't get back to sleep.  I had gotten a bit better for awhile, but it seems like it's worse again - I wake up early for no discernible reason and then I'm exhausted all day.  Crazy.