Sign up to get the inside scoop on today’s biggest stories in markets, tech, and business — delivered daily. download the app Email address Sign up By clicking “Sign Up”, you accept our Terms of Service and Privacy Policy . Hardison, a 64-year-old grandmother, has ranked higher than tech entrepreneur Bryan Johnson in the Rejuvenation Olympics, an online leaderboard that tracks metrics of longevity. One of her biggest tips for living a long, healthy life is free. This story is available exclusively to Business Insider subscribers.

---

Persons: Bryan Johnson's, —, Amy Hardison isn't, Bryan Johnson Organizations: Service, Business