![NPR Topics: Story of the Day Podcast show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/011/349/small/npr-story-of-the-day.jpg)
Summary: John David, 73, is one of the many faces of a growing group of Americans: seniors who work. The former TV producer switched careers in his 50s, becoming a fitness instructor. "This turned out to be the real calling," he says.
Summary: John David, 73, is one of the many faces of a growing group of Americans: seniors who work. The former TV producer switched careers in his 50s, becoming a fitness instructor. "This turned out to be the real calling," he says.