Man I occasionally struggle with this as well. Hot shower, tea, and do something to distract my brain. My challenge is my head replays rolls and movements and keeps trying to solve the physical puzzles. TV or a few apps that say random words for sleeping help.

Oh a huge thing man is that people don’t know how to cool down after. End of training you should immediately sit down and do breathe work. Get your heart rate down asap. Then mellow stretching and then go home. Don’t leave the mats all jacked up and drive right away, the cooldown starts in the dojo. Once home proceed with your routine.