Maybe you weren't born with gorgeous, overarched feet, but that doesn't mean you're completely stuck with what you've got. "Strength and flexibility can improve with training, but that's within the limits of your individual anatomy," says Dr. Nancy Kadel, a Seattle-based orthopedic surgeon who specializes in dancers' foot and ankle issues. Building a balance of both will help you achieve more supple feet that can support ballet's demands. Kadel recommends the following: