I wish I didn't relate so well to what you're saying. I'm finding the hangover very, very hard too. I talked to my T about it this week and found it to be a fairly unhelpful conversation.

I had this new idea that what might help is to do more exercise the in the 36 hours or so following therapy. I didn't get to fully test it out this week though because there are always a million other priorities and I'm not good at defending myself against all the crazy encroaching demands. I did walk about 7K the day of therapy this week. I'm going to try to swim in the evening after therapy and then run the following AM. if nothing else maybe I'll sleep better.