The greatest fear of aging is not physical incapacity but mental incapacity If you do not have good mental faculties then you will not be able to function effectively both mentally and physically. While physical exercise does contribute to good health and is important, mental exercise is even more important. As we learn to adjust with the aging process, it is remarkable to see how some folks are trim in all capacities late into their 90s. I have met some remarkable people in our town here. One batch that always amazed me for their mental capacity were those who deal you a hand of cards.
Clues to a lucid old age is about the benefits of playing bridge. Of course, those active in professions, reading and writing and other mental work (even cross-word puzzles) are also dealing themselves a good hand.