It would be understandable to think that the 12,000 participants in the National Senior Games are the lucky ones, people who have somehow avoided the challenges of age; but that would be a mistake. Those who stay active can suffer from aches and pains, diseases, disabilities and unexpected life events just like anyone else. But there is growing evidence to suggest vigorous physical activity can minimize the effects, aid in recovery and ease discomfort in ways that allow people to continue to live vibrant lives.