Is it true that mewing can help sharpen your jawline? Mewing — an oral exercise that is touted as a way to improve facial structure — has been trending on social media, with some people ...

Mewing, a practice advocated by social media ... the roof of your mouth and breathe through your nose. Repeat this exercise various times a day.

Creators online claim mewing is the easy hack to define your jaw treatment-free. It involves pressing your tongue to the roof of your mouth with your teeth lightly touching and your mouth closed.