I have to be at work at a different time every day (today: 11am) since we shoot at different times every day. So some days, I can sleep in.
Except every morning, without fail, at 5:30am, my cat will nose me in the face, waking me up and not leaving me alone until I somehow start to pay attention to him for at least 10 minutes.
For some reason, he does not do this on weekends. Only on weekdays. And I cannot for the life of me figure out why, or how he knows.