One of the movement relationships we highlight in the office is between the thoracic spine and the shoulder. When a patient lacks thoracic extension and/or rotation, so much of this is put on the shoulder girdle - This added stress on the shoulder leads to overuse injuries and instability. When we focus on mobilizing these areas together, there is a decrease in thoracic spine pain and an increase in shoulder stability.
If you are a throwing athlete, or frequently load the shoulder in an over head position (overhead press, Olympic lifting, etc.) try adding this mobility exercises to your rehab routine!