Novak Djokovic is still outlasting opponents nearly half his age on tennis's biggest stages. LeBron James continues to dictate the pace of NBA games, defending centers and orchestrating plays like a point guard. Allyson Felix won her 11th Olympic medal in track and field at age 35. And Tom Brady won a Super Bowl at 43, long after most NFL quarterbacks retire. The sustained excellence of these athletes is not just due to talent or grit ' it's biology in action. Staying at the top of their game reflects a trainable convergence of brain, body and mindset. I'm a performance scientist and a physical therapist who has spent over two decades studying how athletes train, taper, recover and stay sharp. These insights aren't just for high-level athletes ' they hold true for anyone navigating big life changes or working to stay healthy. Increasingly, research shows that the systems that support high performance ' from motor control to stress regulation, to recovery ' are not fixed traits but...
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