First, she clarified the phenomenon, telling Glam that jowls refer to "the droopy skin on the lower part of the cheek [and] jawline. Some people may be more familiar with the term double-chin.
Dr Idriss explained that jowls - "the jiggly wobbly piece of fat right along the outside part of your mouth" - develop earlier on certain people. However, cheekbiting can accelerate this process ...