How exactly are elite athletes like Tom Brady, Roger Federer, and Serena Williams still at the top of their games well into their 30s and beyond? Jeff Bercovici, the author of “Play On: The New Science of Elite Performance at Any Age,” explains the exercising, dieting, and recovery techniques that allow older athletes to continue to dominate in their respective sports. Plus, he delves into emerging sports science that can help amateur athletes avoid injury and up their game.

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