“Brain fitness as we age depends significantly on maintaining a healthy and active prefrontal cortex. The more we engage this brain region during daily activities, the better we will be able to control our thoughts and think flexibly.”
This helps explain why my 97 year old mother can recall detailed political arguments to the delight of her five children. She has always read The NY Times and done the crossword puzzle before breakfast. She reads a couple of books a week, has a personal trainer, and walks every day.