And Now, The Downside To Working Second Shift

I go back to my regular hours today/Wednesday.  Well, actually no -- I have to work a half-hour earlier because I'm filling in in a different skill.  (I've noticed I have had to come to work early on several Wednesdays.  Could this be a pattern?)  So I get off of work at midnight (actually a quarter after -- I had to reassemble a fan attached high up on a wall that I knocked off with a ladder, stupid story, won't tell it) and have to wake up at 5:30.  I got home at 12:30.  I should be asleep now, but I'm not.

Man, less than four hours of sleep.  Wouldn't my boss step in and not allow me to do this?