Mewing
Tongue posture technique of resting the tongue against the roof of the mouth to potentially improve facial structure, jawline definition, and breathing
Bottom Line
Mewing is the practice of maintaining proper tongue posture - resting the entire tongue against the palate with lips closed and teeth lightly together. Named after Dr. John Mew and popularized by his son Dr. Mike Mew, it's become a viral phenomenon with claims of dramatic facial restructuring.
What the evidence shows:
- Tongue posture does influence craniofacial development in children
- Mouth breathing is associated with altered facial development
- Adult bone remodeling is limited compared to children
- No RCTs exist on "mewing" specifically
- Dramatic adult transformations are likely exaggerated or due to other factors
The realistic take:
- Proper tongue posture is genuinely good for breathing and oral health
- Children may see more significant facial development effects
- Adults may see modest improvements, mainly soft tissue
- Dramatic jawline changes in adults are unlikely from mewing alone
- Before/after photos online are often misleading (lighting, angles, weight loss, puberty)
C-level evidence. Mewing probably won't transform your face as an adult, but proper tongue posture is associated with better breathing, reduced snoring, and dental health. It's free and low-risk, so worth practicing for general health benefits rather than aesthetic transformation.
Science
The Orthotropics Theory:
Dr. John Mew developed "orthotropics," proposing that facial structure is largely determined by oral posture during development, not just genetics.
Core Principles:
| Factor | Impact on Face |
|---|---|
| Tongue posture | Palate width, midface development |
| Lip seal | Jaw position, facial length |
| Breathing mode | Vertical vs horizontal growth |
| Chewing forces | Jaw strength, width |
Proper Tongue Posture:
- Entire tongue resting on palate (not just tip)
- Back third of tongue engaged
- Creates upward and forward pressure
- Promotes horizontal facial growth
Mouth Breathing Effects:
- Tongue drops to floor of mouth
- Face grows longer and narrower
- "Long face syndrome" or "adenoid facies"
- Recessed chin and jaw
- Narrower palate
Why It Matters:
- Tongue applies ~500g of force to palate
- Over time, this shapes bone (Wolff's Law)
- Children's bones are more malleable
- Adult bones can still remodel, but slowly
Wolff's Law:
Bone adapts to the loads placed upon it. The tongue's constant pressure theoretically shapes the maxilla and influences overall facial development.
The Adult Question:
- Sutures fuse around age 25
- Adult bone remodeling is slower
- Soft tissue changes are possible
- Dramatic skeletal changes less likely
Airway Connection:
- Proper tongue posture supports nasal breathing
- May reduce sleep apnea risk
- Related to Nasal Breathing and Mouth Taping
Supporting Studies
7 peer-reviewed studies
View all studies & compare research →Practical Protocol
The Mewing Technique:
Basic Position:
- Close your mouth with lips gently sealed
- Place the TIP of your tongue behind upper front teeth (not touching)
- Press the MIDDLE of your tongue to the palate
- Engage the BACK of your tongue against the soft palate
- Keep teeth lightly touching or slightly apart
- Breathe through your nose
The "Suction Hold":
- Say "sing" and notice where tongue hits palate on "ng"
- Keep tongue in that position
- Create slight suction to hold tongue up
- This engages the posterior third
Common Mistakes:
| Mistake | Correction |
|---|---|
| Only tip touches | Engage entire tongue |
| Pressing too hard | Gentle, sustained pressure |
| Forgetting back third | Focus on "ng" position |
| Clenching teeth | Light touch or slight gap |
| Mouth breathing | Commit to nasal breathing |
Progression:
Week 1-2: Awareness
- Check tongue position frequently
- Set hourly reminders
- Practice for 5-10 minutes consciously
Week 3-4: Building Habit
- Increase conscious practice
- Focus on maintaining during activities
- Practice during sleep (mouth tape may help)
Month 2+: Automation
- Should become more automatic
- Continue checking periodically
- May take 6-12 months for true habit
Advanced: Hard Mewing
- Pressing tongue more firmly
- Controversial - may cause TMJ issues
- Not recommended for beginners
Complementary Practices:
- Nasal Breathing - Essential for mewing
- Mouth Taping - Maintains position during sleep
- Chewing hard foods or mastic gum - Jaw development
- Good head/neck posture - Affects tongue position
Risks & Side Effects
Generally Low Risk:
Mewing is essentially just proper tongue posture. Risks are minimal when done correctly.
Potential Issues:
| Risk | Likelihood | Prevention |
|---|---|---|
| TMJ discomfort | Low-Moderate | Don't clench, see dentist |
| Muscle fatigue | Common initially | Gradual progression |
| Soreness | Common initially | Don't force it |
| Orthodontic interference | Possible | Consult orthodontist |
Hard Mewing Risks:
- TMJ dysfunction
- Jaw pain
- Headaches
- Tooth movement (uncontrolled)
- Not recommended
Who Should Be Cautious:
- Those with TMJ disorders
- People in active orthodontic treatment
- Those with jaw pain
- Anyone with dental work concerns
When to Stop:
- Persistent jaw pain
- Clicking or popping in jaw
- Headaches
- Tooth sensitivity
Realistic Expectations:
The main risk is psychological - expecting dramatic adult facial changes and being disappointed. Set realistic expectations for modest benefits.
Risk Level: LOW. Proper tongue posture is natural and generally beneficial. Avoid "hard mewing" and excessive force.
Who It's For
May Benefit:
Children/Adolescents (Best Candidates):
- Growing children with developing faces
- Kids with mouth breathing habits
- Those with narrow palates
- Children with orthodontic concerns
- Ages 4-18 (bones still developing)
Adults:
- Those with poor tongue posture habits
- Mouth breathers wanting to switch to nasal
- People interested in facial aesthetics (modest expectations)
- Those with mild sleep-disordered breathing
- Anyone wanting better oral posture
Related Conditions:
- Mouth breathing
- Snoring
- Mild sleep apnea
- Forward head posture
- "Tongue thrust" swallowing
Probably Won't Help Much:
- Adults expecting dramatic bone changes
- Those with severe skeletal issues (need orthodontics/surgery)
- People with established jaw deformities
Consider Myofunctional Therapy If:
- Difficulty maintaining tongue posture
- Tongue tie suspected
- Swallowing dysfunction
- Want professional guidance
How to Track Results
What to Track:
Photos (Most Important):
- Same lighting, angle, distance
- Profile view (most relevant)
- Front view
- Take monthly
- Don't expect visible changes for 6-12+ months
Photo Protocol:
| Aspect | Standardize |
|---|---|
| Lighting | Same natural light |
| Angle | Profile at 90 degrees |
| Distance | Same spot each time |
| Expression | Neutral, relaxed |
| Time | Same time of day |
Subjective Tracking:
- Ease of nasal breathing
- Tongue posture awareness (1-10)
- Any jaw discomfort
- Sleep quality
- Snoring (if applicable)
Habit Tracking:
- Times per day you catch mouth open
- Percentage of day with proper posture
- Sleep position maintenance
Realistic Timeline:
- Week 1-4: Building awareness
- Month 2-6: Habit formation
- Month 6-12: Soft tissue changes possible
- Year 1+: Any bone changes (modest in adults)
What NOT to Expect:
- Dramatic changes in weeks
- Visible bone restructuring as adult
- Instagram transformation results
Top Products
Tongue Posture Aids:
- Mewing.coach - App for reminders and tracking
- Various reminder apps
Complementary Products:
- Mouth Tape - Hostage Tape, Somnifix, 3M Micropore
- Mastic Gum - Amazon options
- Jawzrsize - Jaw exercise device (controversial)
- Chisell - Jaw exercise device
Finding Practitioners:
- Orthotropics practitioners - orthotropics.com
- Myofunctional therapists - aomtinfo.org
- Airway-focused dentists - Search "airway dentist" locally
Educational Resources:
- Orthotropics YouTube channel (Dr. Mike Mew)
- The Mewing Community subreddit (r/mewing)
- Note: Online before/afters are often misleading
Cost Breakdown
Self-Practice:
- Free
- Just requires awareness and consistency
Myofunctional Therapy:
- Initial evaluation: $100-200
- Treatment program: $500-2,000
- Helpful for tongue tie, swallowing issues
Related Interventions:
| Item | Cost |
|---|---|
| Mouth tape | $10-20/month |
| Mastic gum | $15-30/month |
| Chewing device (Jawzrsize) | $30-50 |
Orthodontic Devices (If Needed):
- Palate expanders: $2,000-5,000
- Myobrace: $3,000-8,000
- DNA appliance: $5,000-10,000
- ALF appliance: $3,000-7,000
Professional Help:
- Orthotropic dentist: Varies
- Myofunctional therapist: $500-2,000
Value Assessment:
Mewing itself is free. If serious about facial development, professional evaluation may be worthwhile, especially for children.
Podcasts
Unlocking Jaw Health: Mewing, Bioesthetic Dentistry, and Tongue Posture for Total Wellness LIFE Network: RAW Podcast #6
Unlocking Jaw Health joins Ben Greenfield Life to discuss mewing, bioesthetic dentistry, and...
How To Sculpt a Perfect Jawline WITHOUT Surgery : 1378
Dave Asprey discusses how to sculpt a better jawline without surgery. Covers mewing,...
Discussed in Podcasts
Mewing basics: suction your entire tongue against the roof of your mouth all day
Suction your entire tongue tip-to-base against the palate during all activities. The book Jaws shows dramatic facial changes from mewing.
Who to Follow
Key Figures:
- Dr. John Mew - British orthodontist, founder of orthotropics
- Dr. Mike Mew - Son, popularized mewing on YouTube
- Dr. Kevin Boyd - Pediatric dentist, facial development focus
- Dr. Weston A. Price - Historical research on traditional diets and facial development
Online Presence:
- Orthotropics YouTube (700k+ subscribers)
- Reddit r/mewing (200k+ members)
- TikTok mewing community (billions of views)
- Looksmaxxing communities
Controversy:
- Dr. Mike Mew was removed from British Orthodontic Society
- Mainstream orthodontics is skeptical
- Debate continues about adult bone remodeling
- Before/after photos often problematic
Celebrity Mentions:
- Various fitness influencers discuss mewing
- Part of broader "looksmaxxing" culture
- Viral on TikTok and YouTube
Synergies & Conflicts
Breathing Stack:
- Mewing (tongue posture)
- Nasal Breathing - Essential complement
- Mouth Taping - Maintains posture during sleep
- CO2 Tolerance Training - Breathing efficiency
Facial Development Stack:
- Mewing (tongue posture)
- Hard food chewing / mastic gum
- Good head/neck posture
- Myofunctional exercises
Sleep Quality Stack:
- Mewing + mouth taping
- Sleep Environment
- Side sleeping position
- Elevated head if snoring
Posture Stack:
- Mewing (oral posture)
- Chin tucks (neck posture)
- Shoulder blade squeezes
- Overall postural awareness
For Children:
- Mewing training
- Hard food diet
- Nasal breathing emphasis
- Early orthodontic evaluation
- Myofunctional therapy if needed
What People Say
Why It's Popular:
Common Claims:
The Reality:
Many dramatic before/afters are confounded by: - Weight loss (reduces face fat) - Puberty (ongoing development) - Lighting and angles - Photo manipulation - Placebo/confirmation bias
What's More Likely True:
Community: