From the New York Times:

“Why do some older people remain mentally nimble while others decline? “Superagers” are those whose memory and attention isn’t merely above average for their age, but is actually on par with healthy, active 25-year-olds.”

Guess what? It comes down to doing hard things.

“Many labs have observed that these critical brain regions increase in activity when people perform difficult tasks, whether the effort is physical or mental. You can therefore help keep these regions thick and healthy through vigorous exercise and bouts of strenuous mental effort. … This means that pleasant puzzles like Sudoku are not enough to provide the benefits of superaging. Neither are the popular diversions of various “brain game” websites. You must expend enough effort that you feel some “yuck.” Do it till it hurts, and then a bit more.”

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