Many workouts, one goal: When Nayara Lopes is asked what she does to cross-train, there's no short answer. Some days she swims laps; other days she takes yoga. And then there are her elliptical sessions, strength-training with light weights and Pilates classes. Why does she work so hard outside of the studio? "Because I want to feel good onstage," she says. "There's nothing better than going out there and having fun and knowing you're gonna get through it." Thanks to her cardio routine, stamina isn't an issue. "When I'm onstage, I feel ready for anything."