Our mind is our most important asset – more important than our house, bank account or stock portfolio. We insure our house and work hard to pad our bank account. To enhance our brainpower we need a brain workout. A vigorous and diverse mental life with mental challenges stimulates growth of new neurons and new connections between them. The brain is a complex organ with different parts in charge of different mental functions. Functions such as memory, attention, perception, decision making, or problem solving requires a whole network of brain regions rather than a single region.