Model Behavior - What Does it Take to Get Vogue Fit?

In Vogue's April issue, we celebrate the knockout bodies of six of our favorite models, who, with their hard-charging and dynamic workouts, give new meaning to the phrase "Strong is the new skinny." See what happens in today's fitness video when they show us their best behind-the-scenes moves—from a slam dunk tennis serve to a flexibility-testing split. Video by Barbara Anastacio.