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 ...