She's not really an athlete. She's a retired biologist who loves adventure. That's why 96-year-old Mary Anne Cooper traveled from British Columbia to Arizona to compete in the U.S. Masters Swimming National Championships.

Siphiwe Baleka is a one-of-a-kind Yale graduating, globetrotting, God-fearing, truck-driving, fast-swimming family man. And he's got a new mission -- to help long-haul truckers everywhere improve their health, fitness and quality of life.

The best thing about passion is that it's contagious. Dr. Jack Beattie has it. And his family and friends have caught it.

As a triathlete himself, Dr. McFadden understands why it's so important to his patients to get back in the game as quickly and pain-free as possible.

Challenges are nothing new to Martha Carswell -- she's a former pro basketball player and finished Ironman Kona. But when her bike was hit head on by a van, it shattered more than her body. See how she's still learning to live again.

Just a few years ago, Roderick Sewell was a homeless teenager with no legs who was failing school. Today, he's a world-class athlete, attends college and he's set his sights on a big goal -- making the Paralympics team.

We dig masters swimming. Men and women of all ages compete with those of equal ability but against those in their own age group. Dive into this story and discover why it's quickly becoming one of the world's great intergenerational activities.