Musashi Fuchu Little League baseball players spend eight to 10 hours a day on weekends practicing on this field on the outskirts of Tokyo. This traditional powerhouse team has won the Little League World Series twice before, in 2013 and 2003, but did not qualify this season. Anthony Kuhn/NPR hide caption

itoggle caption Anthony Kuhn/NPR

Ronda Rousey celebrates her most recent Ultimate Fighting Championship win on Aug. 1, shortly after knocking out Bethe Correia in just over half a minute. Ricardo Moraes/Reuters/Landov hide caption

itoggle caption Ricardo Moraes/Reuters/Landov

Serena Williams en route to winning the Western & Southern Open in Cincinnati on Sunday. Tannen Maury/EPA/Landov hide caption

itoggle caption Tannen Maury/EPA/Landov

Peloton's New York City cycling studio has a television production facility so that subscribers, using bikes equipped with a waterproof tablet, can ride along at home. Issac James/Courtesy of Peloton Cycle hide caption

itoggle caption Issac James/Courtesy of Peloton Cycle