Play On: The New Science of Elite Performance at Any Age

A lively, deeply reported tour of the science and strategies helping athletes like Tom Brady, Serena Williams, Carli Lloyd, and LeBron James redefine the notion of “peak age.”

Season after season, today’s sports superstars seem to defy the limits of physical aging that inevitably sideline their competitors. How much of the difference is genetic destiny and how much can be attributed to better training, medicine, and technology? Is athletic longevity a skill that can be taught or a mental d...