Group Fitness Instructor

Answer: C - Kyphosis is not a condition often seen in the world of ballet. It is a condition common to the elderly, especially individuals with osteoporosis or compression fractures, but it is not exclusive to the old. Many youthful, fit athletes (such as swimmers and weight lifters) experience an exaggerated curve in the mid-spine from overdevelopment of the pectoral muscles without concomitant training of the posterior spinal muscles.