If you’ve spent any time on social media, you’ve probably seen the buzz around “mewing.” It’s a trend where people press their tongue to the roof of their mouth in hopes of getting a more defined jawline. Influencers and content creators have turned it into a viral beauty hack, but what many don’t realize is that “mewing” is rooted in real science, and its benefits go far beyond appearance.
The term “mewing” comes from Dr. John Mew and Dr. Mike Mew, orthodontists who promoted the concept of proper tongue posture — specifically, keeping the entire tongue (not just the tip) suctioned up against the roof of the mouth, just behind the upper front teeth.
When done correctly, this tongue position helps:
Support the upper jaw and facial structure
Promote nasal breathing
Encourage proper swallowing and oral rest posture
So while it may look like just a beauty technique online, the real purpose of this posture is functional health — the jawline definition is simply a natural side effect of a well-developed airway and balanced facial growth.
Your tongue is a powerful muscle that shapes your face and affects how you breathe, chew, and even sleep.
When your tongue rests low in the mouth (as it often does in people who mouth-breathe or have nasal congestion), it can contribute to:
A narrow upper jaw or crowded teeth
An elongated face shape
Poor airway development
Snoring and sleep-disordered breathing
Speech or swallowing difficulties
By contrast, when your tongue naturally suctions to the roof of your mouth — the way it’s meant to — it acts like a built-in support system for your airway and skeletal development.
While “mewing” videos can make it seem simple, it’s not just about pressing your tongue up. True tongue posture is part of a larger system involving:
Proper lip seal (lips together, teeth slightly apart)
Nasal breathing (not mouth breathing)
Correct swallowing mechanics
Myofunctional therapy works to strengthen and retrain these muscles so that your body naturally maintains this healthy posture all day and night — without conscious effort.
Think of it as functional mewing: not a quick fix, but a way to restore balance to the muscles that control your face, mouth, and airway.
Yes, people who maintain proper tongue posture often develop a more defined jawline and balanced facial symmetry. That’s because the tongue helps shape the upper jaw and support facial structure. But these changes are really a reflection of better function — healthy breathing, strong muscles, and an open airway.
The “mewing look” that people chase online is actually what healthy facial growth should look like in the first place.
So, if you’re trying out “mewing,” know this: you’re tapping into something deeper than a trend. You’re exploring how the tongue, lips, and airway all work together to support optimal breathing, sleep, and overall health.
The real goal isn’t just to change your appearance — it’s to help your body function the way it was designed to.
“Mewing” isn’t magic. It’s a social media version of what myofunctional therapists have been teaching for years:
Tongue up
Lips together
Breathe through your nose
A better jawline may get your attention — but better breathing, better sleep, and better health are the true rewards.