Every time you stretch, twist or bend, your tendons — the tissues that attach your muscles to your bones — go into action. Too much action can result in tendonitis, the inflammation caused by repetitive motion as well as by aging and injuries that tear your muscle fibers. Giving the irritated area time to heal makes sense, but often people can’t take as much time as needed to let the muscle rest. Seek a professional massage therapist to help relieve specific tendonitis issues. Continued use of the joint can result in chronic tendinitis.