I can understand how you react both ways to being overtired (((HUGS)))

I don't have to work tho.
I'm sorry that you have to struggle with so little sleep and have to go to work, and have concerns about how your behavior when you get overtired may effect your students

I wish there was a way you could bail out early, or hide under your desk at the end of the day

It seems like you go to the dentist's office pretty often, so you are caring for your teeth and mouth