Tetris effect

Tetris Effect is a kind of feeling or experience that someone can have when they've done something over and over again, like a particular type of work, playing a certain kind of game, or repeating an action. When they do something over and over, they can start to dream or think about it even when they're not doing that activity. It's kind of like when you brush your teeth and then keep feeling the bristles on your teeth when you're not brushing!