Courtesy Sports Illustrated
What’s harder than posing almost naked in the freezing cold in Antarctica? Preparing to pose almost naked in the freezing cold in Antarctica.
We chatted with David Kirsch, the trainer who primed Kate Upton for her second Sports Illustrated cover, and let’s just say: Upton must be exhausted.
Kirsch began working with the supermodel back in August, and for the first two weeks, Upton met with him for sessions twice a day. From then on, the model exercised five to six days per week for one and half to two hours until the photo shoot in December.
“[She did] boot camp circuit training mixed in with cardio,” Kirsch tells PEOPLE. “Running, rowing and the elliptical.” He adds that there are six regions a model needs to focus on for an SI: Swimsuit Edition shoot: “Legs, inner thighs, hips, butt, abs and arms. Anything that shows when you’re wearing a bathing suit. Which is … everything!” (Especially when that bathing suit is as tiny as some of the ones Upton sported!)