When Vera Konig asked a tennis pro how to improve her game, he told her to swap her racket for boxing gloves. “If anyone else had suggested kickboxing, I would have laughed,” she says. Now, at 75, she credits twice-weekly sessions for keeping her competitive on the court. Ms. Konig, a retired college professor based in New York City, describes herself as a lifelong athlete. In her 40s, she started working with a tennis pro....

Source: Wall Street Journal April 21, 2018 11:00 UTC