The New York Times bestseller with a new afterword about early specialization in youth sports from the author of Range: Why Generalists Triumph in a Specialized World.

The debate is as old as physical competition. Are stars like Usain Bolt, Michael Phelps, and Serena Williams genetic freaks put on Earth to dominate their respective sports? Or are they simply normal people who overcame their biological limits through sheer force of will and obsessive training?



In thi ...