Most chronic pain and injury result from compromised musculoskeletal function - muscles doing jobs they are not designed to do, because we have lost our vertical alignment.
This includes all kinds of chronic pain from back, hip, knee, shoulder, neck, foot pain to plantar fasciitis, tennis elbow, frozen shoulder, carpal tunnel syndrome and more. The cause of all these is the same.
Therefore, restoring our natural vertical posture will allow muscles and joints to rest in their proper positions, allowing them to function properly, without stress, friction, break-down and pain.