Serena Williams. Tom Brady. Roger Federer. What really goes into making a G.O.A.T.? And extending that greatness for decades? Reporter, best-selling author, and current host of the podcast How To!, David Epstein is one of sports’ top mythbusters. His books The Sports Gene and Range delve into athletes’ lives, minds and habits to find the building blocks of success. Epstein applies his findings to trends like more superstars performing well as they age, and why getting kids to specialize in one sport might actually lead to injury rather than wins.