Investigative health journalist Judy Foreman suggests that the key element to extending a healthy lifespan is exercise.The first thought many people have in regards to exercise is that it's a means to an end in terms of weight loss.

But, moving your body has a much greater impact on your health as a whole. In fact, it may be the key to slowing the aging process.

Investigative health journalist Judy Foreman suggests that the key element to extending a healthy lifespan is exercise, through its myriad effects on dozens of molecules in the brain, the muscles, and other organs.

She explains all of this in her book, Exercise Is Medicine: How Physical Activity Boosts Health and Slows Aging. After all her research, Foreman's resounding conclusion is that exercise itself is by far the most effective, and safest, strategy for promoting a long, healthy life.

Listen as Foreman joins host Lisa Davis to share insights from the book and how you can actively contribute to your own longevity.