At my first appointment my Physical Therapist, Trey, asked me at least one hundred questions, and then moved my arm, neck, back and shoulder all over including making it hurt on purpose, and then asking follow up questions about the pain.  After an hour of this he explained what I’d done - a labral tear in my shoulder.  And I said, “Oh, so if I tore a muscle I just need a sling right?  I should stop using it so it can heal?”  He literally laughed at me. Then through his n95 mask he said  “It’s not a muscle.  It’s connective tissue, and the last thing you should do is stop using it.”