It reminds me of a random bit of Doublelift's stream I caught earlier in the year of how he rarely listens to music while driving alone and would instead start thinking about item powerspikes and laning. Or closing his eyes before sleeping and seeing lane phase play out.
I've talked to quite a few players over the years that have mentioned using visualization (particularly before bed/while trying to sleep) to help them improve matchup understanding and 'practice' different scenarios while away from their computer.
Interestingly the player I first remember talking to this about was actually Biofrost!