Mewing and HYOIDR train the same muscle group from opposite directions. Mewing is a static posture. HYOIDR is a progressive load.
Mewing places the tongue against the roof of the mouth and holds it there. Over months, this trains the tongue and the small muscles around the palate to default to that resting position. The upside is that a permanently high tongue position keeps the hyoid bone slightly higher than it would otherwise sit.
HYOIDR applies calibrated inspiratory resistance. The suprahyoid muscles under the jaw fire on every breath through the upper airway dilator reflex. Progressive resistance over six to twelve weeks produces measurable hypertrophy of those muscles and further hyoid elevation.
They are complementary, not competing. Mewing sets the baseline. HYOIDR builds the muscle that holds the baseline. Almost everyone who mews for more than six months plateaus, because posture alone cannot progressively load a muscle. HYOIDR is what unblocks the plateau.
Mewing was popularised online in the 2010s from orthodontist John Mew's work on tongue posture and craniofacial development. The instruction is simple: rest the tongue flat against the roof of the mouth, keep the lips sealed and the teeth lightly touching, breathe through the nose.
The mechanism is straightforward. The tongue is a strong muscle. When it rests high against the palate, it exerts upward pressure on the maxilla and provides a passive lever that keeps the hyoid bone slightly elevated. Over time, the small stabiliser muscles around the tongue and palate adapt to that default position.
In children whose facial skeleton is still developing, chronic tongue-to-palate posture appears to influence maxillary growth. This is what Mew's original work described. In adults whose facial bones are already set, the skeletal effect is minimal. What remains is the soft-tissue and hyoid-position effect.
Mewing works. It is not fake. It is also limited.
Static posture cannot train a muscle beyond a certain point. Muscles grow in response to progressive overload, meaning increasing tension over time. Holding a tongue position is not overload.
After roughly six months of consistent mewing, most people report that visible changes stop. The tongue-posture default is established. The hyoid is elevated to whatever position tongue tension can pull it to. From there, further change requires actually loading the suprahyoid group. Mewing does not do that.
The dysphagia rehabilitation literature has known this for two decades. Rehabilitating a weak swallow requires progressive resistance exercises like the Shaker exercise or CTAR (chin tuck against resistance). Static tongue posture alone does not produce measurable suprahyoid strength gains.
HYOIDR trains the suprahyoid muscles through calibrated inspiratory resistance. When you inhale against resistance, the upper airway dilator reflex fires the pharyngeal dilator muscles and the suprahyoid group on every breath. This is a phasic contraction, not a hold, and it happens against progressive load across seven resistance levels.
The training modality is standard progressive overload applied to a muscle group that virtually nobody progressively loads. The result over six to twelve weeks is measurable suprahyoid hypertrophy, further elevation of hyoid resting position, and a sharper visible jaw-to-neck angle.
Ten minutes per day. Zero load on the TMJ, unlike bite-based jaw trainers. Compatible with mewing.
If your goal is a sharper jawline and you have time to do both:
1. Mewing as the resting default. Tongue on the palate, mouth closed, breath through the nose. All day, every day. Costs nothing. Sets the baseline hyoid position.
2. HYOIDR ten minutes per day. Progressive inspiratory resistance training. Builds the muscle that holds the baseline. Six to twelve weeks of daily use produces visible change.
The combination outperforms either alone because they operate on different mechanisms. Mewing sets the resting position. HYOIDR builds the active tension that holds it.
If you can only do one: HYOIDR moves the visible needle faster because it provides the loading stimulus mewing cannot. But you should mew anyway. Posture matters, and it is free.
Mewing alone is enough if:
Mewing is not enough if:
Should I stop mewing if I start using HYOIDR?
No. They stack. Mewing is your all-day resting default; HYOIDR is your ten-minute-daily training session. They target the same muscle group through different mechanisms.
Can HYOIDR replace mewing entirely?
Not exactly. HYOIDR builds the muscle. Mewing sets the posture the muscle holds. Without the posture default, gains from training tend to erode. Do both.
Which produces faster visible change?
HYOIDR. Progressive load produces measurable hypertrophy in six to twelve weeks. Mewing produces slower and subtler change over months to years, and mostly in people whose faces are still developing.
Will mewing damage my jaw or teeth?
Correctly performed mewing (tongue flat and high, teeth lightly touching, no forced pressure) has no known negative effects. Aggressive "hard mewing" with sustained pressure has been anecdotally associated with tooth movement and jaw discomfort. The soft version is the correct version.
Does mewing work for adults?
Partially. The bone effects require an actively developing skeleton, which means children and adolescents. Soft-tissue and hyoid-position effects are still present in adults but smaller and slower. Adults who want visible change usually need to add progressive loading (HYOIDR, CTAR, or the Shaker exercise) to see meaningful movement.
Educational content. Not medical advice.