“Most experienced coaches know one of the fastest ways to clean up a nagging shoulder, neck, or lower-back problem is to improve mid-back mobility with targeted thoracic spine exercises.
This region of the spine, from roughly the base of the neck to a few inches below the shoulder blades, has a natural outward facing curve. However, when this curve becomes excessive—due to chronic postural adaptations, faulty loading patterns or bad luck—it loses its ability to move freely.
These types of adaptations can also cause rounded shoulders, alter rib cage and abdominal mechanics, and make it difficult to raise your arms over your head without compensating movement somewhere else in the body.”
Excerpt from “6 Thoracic Spine Exercises to Improve Mobility” from stack.com