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You can totally play Tetris in your head
(lemmy.world)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The best ones are thoughts that many people can relate to and they find something funny or interesting in regular stuff.
Since learning about this, I have decided to keep the game installed on my phone in case something wild happens (I'm thinking after witnessing an accident or something). It is sort of comforting to have a scientifically backed up mental strategy that is easily accessible, even if it's not a lot. I gather that tetris keeps the part of your brain responsible for looping images occupied with, well, tetris.