Treatment for collarbone popping depends on the cause of the problem. For example, if tight muscles or tissues are pulling abnormally on your SC or AC joints, this may cause popping, and treatment may focus on stretching tight structures. A weakness of the shoulder muscles may also, cause popping. If this is the case, strengthening your shoulder may be the best treatment for you. Working closely with a physical therapist is a good idea; they can ensure you are properly performing the right exercises for your condition. Exercises to do include • Shoulder wand flexion • Shoulder wand rotation • Behind-the-back towel stretch The sleeper stretch for internal rotation of the shoulder