Posture | Thoracic Spine Mobility Poor posture often starts with a stiff upper back. These 3 exercises improve thoracic spine mobility through flexion, extension, and rotation, giving your spine the movement it’s designed to have. Better thoracic mobility helps: • Reduce neck and shoulder strain • Take pressure off the lower back • Allow a more upright, relaxed posture When the upper back moves well, the rest of the body stops compensating. Mobility restores posture without forcing it. Comment “