Testing the 1% Rule: A Real-World Experiment

What if aging didn't have to mean decline? At 60, Dr. Brad Cooper is running a real-world experiment on himself: can he match—or even beat—his marathon and Ironman finish times from over a decade ago, without medications or TRT? In this episode, he lays out the data behind the "1% per year after 40" drop-off, why he's not willing to accept it as inevitable, and the two races that will put the theory to the test—the California International Marathon and Ironman Texas. He also shares the first hard lesson training in your 60s has already taught him. Whether you're an endurance athlete, an aging competitor, or someone who's been waiting to start something of your own, this is your invitation to stop blaming age for every setback—and to run your own experiment. Send us Fan Mail Reach out anytime with questions or ideas - [email protected] Tap into the BetterPath Substack series on unlocking life's second half here. Access industry-leading, nationally board certified health, wellness & high performance coaching for yourself or your team here.