You can play fun games like Sudoku, the number puzzle game which has become an extremely popular feature in U.S. Newspapers, as well as crossword and word search. We all know as we grow older our bodies change and it becomes important to regularly exercise to maintain health and fitness. Our minds are no different. "Use it or lose it," as the saying goes. New research indicates mental acuity may be strengthened, like muscles, with brain exercises. And these exercises must be done regularly to retain the benefits long term.