Our life styles affect our bodies. They can lead to tensions, give rise to weakness in the muscles attaching the neck to shoulders and the ribcage to the shoulders. One problem leads to another if we neither prevent nor cure it.
Shoulder joint is the most flexible as it has a high range of rotation. So maintaining equal flexibility and strength is important.
Most importantly, increase your awareness, then you understand what, where and why there is the pain. This will help prevent, heal and protect your shoulders against injuries.