Day Four came and went more or less uneventfully.
I still have a vague feeling of a hangover, but of course it's nothing like a real hangover. Today is Friday which used to be a big day for me when I was an active drunk so I have to be on guard, especially in the late afternoon. There isn't much more to say about that; writing it down just brings it into focus.
It's odd that the body heals (sleeping deeply, better digestion, more energy) and still gives you a little headache to remind you.