There are many activities that can boost brain power as we age. These include playing puzzles and games, reading, exercise like walking, meditation, listening to music, writing, painting, eating a healthy diet with brain-boosting foods like fish oil, and getting adequate sleep. A simple three-minute exercise that involves squatting while holding the earlobes has also shown benefits for memory, focus, and brain synchronization. Keeping the brain active through various mental and physical stimuli can help maintain brain functionality and reduce risks of memory loss and Alzheimer's.