We've all had the experience of watching a great athletic performance — from gymnast Mary Lou Retton defying gravity to Michael Jordan sinking a mind-blowing turnaround jumper — and wondered: Were they born with that talent or can you get there with hard work and practice?
Sports Illustrated senior writer David Epstein says scientists are learning a lot more about the role of genetics in athletic performance. In his new book, The Sports Gene, he looks at whether big league hitters have naturally faster reflexes, whether some people are born with speed and that delicate question of whether African-Americans are better athletes than whites. Epstein says that science now has answers, or at least insights, into all those questions. He joins Fresh Air's Dave Davies to talk about the secret to hitting a fastball and why slow dogs win the Iditarod.
Interview Highlights
On the truth about baseball and softball hitter reflexes
"Going into it, I figured that they would have these superhuman reaction speeds because they face 100-mile-an-hour pitches everyday, and [softball pitcher] Jennie Finch's fastballs take exactly the...