Flexing and stretching your brain, just like flexing and stretching other parts of your body, is critical for a successful aging workout--so much so that experts suggest that people of all ages exercise both their brains and bodies on a daily basis.
Growing evidence suggests that regular mental calisthenics may help reduce the risk of Alzheimer’s disease or other memory disorders by enhancing cognitive reserve—the mind's resistance to damage; stimulating growth of new brain cells; and maintaining or strengthening connections between brain cells.
Scientists continue to explore the benefits of mental activities, including an increasing number of computerized brain games; not all games have published studies backing them up. But the general consensus is that brain exercise basically has no downside.
For individuals currently living with Alzheimer’s disease, a rule of thumb is to engage the person in mental activities that will not be a set up for failure.