Named after British orthodontist John Mew, mewing instead describes an oral posture training technique involving flattening your tongue against the roof of your mouth to sharpen the jawline and ...

Medically reviewed by Brian T. Luong, DMD Many YouTube and TikTok videos praise the practice, but there's not much evidence that mewing works. Mewing is a face-reconstructing technique that involves ...

However, the British General Dental Council revoked John ... confirming that tongue posture alone can significantly alter jawline shape, especially in adults whose bones have stopped growing.