He rattles off a short list of relevant brain regions, which his lab has already identified as being responsible for working-memory exercises.

NEWYORKER: Don��t!

The combination of strategy and memory in bridge challenges the brain to learn new information and exercises cells so they don't die, Postal says.

CNN: Helpful ways to boost your memory

While physical activity has been shown to aid in sharpening our minds and recall, simple mental exercises can help us to remain sharp and improve memory as we age.

FORBES: Mental Exercises to Help Improve Your Memory