Staying awake

I'm sitting at my kids' school waiting for them to come out. It's 2:52 and it is so hard to stay awake every time I do this. Many times I fall asleep in the line- full on mouth open, drooling and snoring. Okay no drooling or snoring but falling asleep with your mouth hanging open in public is bad enough. I wish I could sleep like Ezra. That kid fell asleep standing up next to his bed. He had gotten up many times after he had been put to bed- I don't know if this was after getting up or about to come out in the living room. Either way- good grief.