Redefine your golden years and shake off the perceived notions about growing old. Dr. Oz explores the science of aging and shows you what you can do to tap into the fountain of youth. Here, a shining example and show guest shares his secrets and proves that you can live life to the fullest well after retirement; he bikes, swims and weight trains - and you'll never believe his age.
Click here to watch Part 2. Dr. Roizen reveals his real age and lets you in on the foods you should eat to achieve longevity.