Did you know that the jaw muscles are the strongest muscle for their size in the body? Not too hard to imagine when we consider how much and what, it is used for. It is a very complex joint, as I explain in the intro, but like any where else in the body the chewing muscles get tight and jam the jaw bone up into the skull and cause Temporomandibular Joint (TMJ) pain. There is a small cartilage disc in between the mandibular or jaw bone and the temporal bone (skull part, I'm trying to keep it simple), and when the jaw muscles become too tight then the small disc can pop out of position. This is the clicking noise many of you hear in the TMJ when you open and close your mouth. Mine used to click but by using the stretching exercises in the SFL program I was able to fix the click. If the muscles of mastication, as they are called in the books, are too tight you will need to see your osteopath to loosen them off first and then you can maintain your TMJ in good working order.