That sounds absolutely awful, and honestly, all you can do is rest it off, which I know is easier said than done. I'm the same after long deadline days.

(My favourite mental health advice - by favourite, I mean 'still makes me laugh at the awfulness of it' was my workplace's suggestion for mental health week - "Walking is good for stress, so if your mental health's not good, why not replace your regular meetings with walking meetings like the CEO has?")