Crossword puzzles and similar games can help you learn words and improve specific skills, but they won’t enhance overall brain function. If you want to preserve your mental abilities, exercise your body. A healthy diet and regular exercise can help maintain memory and general cognition, particularly later in life. Starting habits that promote healthy cognitive aging early in life can preserve brain function during aging. Studies show that foods rich in nutrients and antioxidants appear to reduce the risks of age-related impairment. Aerobic exercise increases blood flow to the brain, and even lessens the rate of tissue loss during aging.