Awake even though I don't want to be

I woke up a little after 4:00, and about 90 minutes later decided I might as well get up.  We are having company this evening, and I might as well get some things done now that way maybe I can sleep later when I feel like I can.  I'm grateful I rarely have nights like this, but they sure do stink when I do!  No one likes being up four hours before the alarm is set to go off, but the good news is that I get to sleep in again tomorrow!