David Epstein has a master’s degree in environmental science and is an award-winning senior writer for Sports Illustrated, where he covers sports science, medicine, and Olympic sports. His investigative pieces are among Sports Illustrated's most high-profile stories. An avid runner himself, he earned All-East honors on Columbia University's varsity track squad. This is his first book. He lives in Brooklyn.

Are we losing a generation of athletes by overprescribing ADHD drugs? David Epstein on the genes that make us move—and their evolutionary purpose.