Train your brain, And gain as you age

What fun is retiring well-off if you're not all there to enjoy the ride?

Anyone unfortunate to have witnessed the ravages of Alzheimer's certainly understands. But almost all of us have experienced some kind of preview of diminished capacity to come -- glasses "lost" perched right atop our brows; forgetting whether or not you just took that vitamin; mentally misplacing long-burned-in info, like your mom's birthday. It starts earlier than most of us want to admit.

There's good news, in the form of research showing the brain has more plasticity than previously thought. In laymen's terms, our aging brains can likely benefit from regular exercise, to help stave off what was previously written off as inevitable, age-induced, mental atrophy.