Called In Sick For Being Too Tired

Yeah, so I called in sick last night because, let's face it, being awake all night isn't just exhausting; it feels like a full-body betrayal. And here's the kicker, my boss was totally on the ball and covered my shift with someone else who did an even better job than me (which is saying something). So now I've got to pretend everything is fine at work tomorrow, but inside, I'm still just this close to face-planting into a pile of pillows. At least I got some sleep... right?