As the world population ages, at least in the developed countries, keeping the mind young as the body grows older becomes an essential task. The oft-repeated but not entirely comprehensive or effective techniques of playing Sudoku or getting more exercise are not enough. This article from Time, reprinted from Health.com, lists and explains a number of other specifics which may or may not appeal to you, but at least some may be worth considering if you are getting into the boomer years.