As people age, the shape of their face begins to change. As fat builds up in the neck, the skin begins to sag and the jaw muscles begin to shrink. This may cause your jawline to become less defined.

Jessica was a writer on the Wellness team, with a focus on health technology, eye care, nutrition and finding new approaches to chronic health problems. Expertise Public health, new wellness ...

The temporomandibular joint (TMJ) is the hinge-like bone that connects your jaw and your skull. You can feel it moving by pressing your index fingers to your cheeks and opening and closing your mouth.

Jaw exercises may help to relieve temporomandibular joint (TMJ) pain. This can include strengthening, stretching, and relaxation exercises. The temporomandibular joints open, close, and move the jaw.

Lockjaw happens when your jaw muscles tighten up so much that you can't open your mouth properly. Tetanus is a serious bacterial infection that can cause lockjaw and muscle spasms. TMJ disorders can ...