I love puzzles that test my mind. My go-to right now is Sudoku at the “Beware: Very Challenging” level. I find the task of searching for patterns within number grids both soothing and energizing. It may sound odd, but I like working through the frustration of a difficult puzzle, in part because I’ve learned enough about brain science to know that I’m making new neural connections within the ball of gray matter that sits between my ears. I’ve also learned enough about brain science to know that puzzle diversity is the key to a healthy brain—much like muscle confusion has been shown to be an essential element of physical fitness.

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