A Rundown of How Gigi Hadid Stays in Top Model Shape

At New York's Gotham Gym, Gigi trains with former pro fighter Rob Piela, whom she credits with igniting her passion for boxing. "We start with jump rope — there's no better way to slim down legs — and we end with ballet-inspired floor exercises. . . . In the middle, we box," Piela said of his routine with Hadid and the other top models who attend his training sessions. "All the girls I work with 
can fight — boxing is great for someone who's competitive."