Book excerpt: Word searches are the new calisthenics for the mind: while each puzzle may not require too much mental energy, do a lot of them and there will be a marked improvement in visual recognition and pattern finding. And this new volume from the AARP can help lower your brain age with every puzzle. Simply circle the words in the search horizontally, vertically, or diagonally, and then read the extra letters for a humorous quote or thought-provoking aphorism. Each puzzle has a clever twist, as well, so lowering your brain age has never been so much fun.