This is a simple exercise band routine that I've found immensely helpful for liberating chronically stiff shoulders.

The movement shown toward the end of the video where the arm is in a back-scratching position is especially helpful to those who have a history of experiencing pain in the shoulders while using the arms overhead. Read more about Simple Band Exercises to Liberate Chronically Tight Shoulders

This is arguably one of the most helpful stretches you can do to keep your shoulders healthy for overhead activity. Read more about Rotator Cuff Stretch to Prevent Impingement, Bursitis, Frozen Shoulder, Thoracic Outlet Syndrome

To improve shoulder and upper back mobility, lie face-up with your head slightly off the end of a bed and let your arms hang freely above your head.

Once you’re comfortable in this position, slowly take your arms through a small arc as though you are making a snow angel - you can do this several times to warm up your shoulder joints. Read more about A Simple Way to Improve Shoulder and Back Mobility

This is a look at how to use a massage ball to release a tight shoulder. Specifically, how to work out hypertonicity through the rhomboids and the muscles that make up the bulk of the posterior shoulder region - teres minor, infraspinatus, posterior deltoid, and the lats.

The ball used in this video can be found here:

https://amzn.to/2oJ72Mi Read more about Release Tight Shoulders