Pilates is a body conditioning routine that may help build flexibility, muscle strength, and endurance in the legs, abdominal, arms, hips and back. It puts emphasis on spinal and pelvic alignment, breathing, and developing a strong core or center, and improving coordination and balance. Pilates' system allows for different exercises to be modified in range of difficulty from beginning to advanced. Intensity can be increased over time as the body conditions and adapts to the exercises.