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.

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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.

For a long time, jawlines were treated like genetics or luck. You either had one… or you didn’t. But lately, facial training exercises have been everywhere, and not just on TikTok. People are quietly ...