Your Face Shapes the Way You Function More Than You Might Think

By Sally Howe, Functional Breath Coach 

The way the face, tongue, and jaw function is far more than an aesthetic or isolated musculoskeletal issue. The orofacial complex, which includes the tongue, jaw, lips, facial muscles, and their connection to the head and neck, plays a central role in how we breathe, move, sleep, and experience pain. Its influence extends through biomechanical, neurological, and even emotional pathways. When these structures are functioning optimally, the body moves and breathes efficiently. When they are not, a cascade of compensations can affect the entire system.

Breathing and Postural Stability

Breathing and posture are deeply interlinked. The primary respiratory muscles, the diaphragm and intercostals, also contribute significantly to postural control. When posture becomes compromised, particularly through forward head posture (FHP) or neck misalignment, respiratory efficiency decreases.

Poor posture narrows the upper airway and reduces the diaphragm’s ability to contract effectively. When the diaphragm is inhibited, the body shifts into upper-chest or accessory-muscle breathing. Research shows that inclined or forward head postures immediately reduce diaphragm strength, as measured by Sniff Nasal Inspiratory Pressure (SNIP). This means the body must work harder to inhale, placing more load on the neck and shoulder muscles and altering whole-body stability.

Breathing patterns also directly affect balance and motor control. Studies demonstrate that individuals who breathe abdominally show greater stability and reduced head acceleration compared to those who rely on shallow chest breathing. In fact, postural characteristics can predict whether a person uses abdominal or thoracic breathing with up to 84% accuracy. This shows the strong relationship between how we stand and how we breathe.

Influence on Sleep and Joint Stability

The orofacial complex also plays a major role in sleep quality and the stability of joints such as the temporomandibular joint (TMJ).

Orofacial myofunctional disorders (OMDs), including mouth breathing, low tongue posture, and lip incompetence, directly contribute to airway collapse during sleep. Dysfunction or low tone of orofacial and pharyngeal muscles destabilises the airway, increasing the risk of sleep-disordered breathing such as snoring and obstructive sleep apnea (OSA).

Orofacial myofunctional therapy (OMT), which retrains tongue posture, nasal breathing, and oral muscle tone, has been shown to reduce AHI on polysomnography, decrease snoring intensity, and even improve adherence to CPAP therapy. These improvements occur because OMT enhances airway stability by optimising the resting posture and strength of the tongue and orofacial muscles.

Head posture is also strongly linked to sleep quality. Individuals with OSA often display pronounced forward head posture, which increases as OSA severity worsens. This posture interferes with airway mechanics and disrupts diaphragm mobility, leading to further breathing inefficiency during sleep.

Joint stability, particularly in temporomandibular disorders (TMD), is also interconnected with sleep and airway function. Mandibular advancement devices (MADs), used to improve airway patency, are generally well-tolerated even in individuals with TMD, although long-term use may result in minor dental changes. The autonomic nervous system (ANS) plays a role as well—altered heart rate variability and autonomic dysregulation are associated with the persistence of TMD symptoms.

Influence on Pain and the Nervous System

Pain, particularly chronic orofacial and musculoskeletal pain, is strongly influenced by the functional status of the face and neck.

A dysfunctional breathing pattern creates a self-sustaining cycle involving decreased stability, muscle co-contraction, and elevated anxiety. Over time, these compensations contribute to neck and back pain. Sleep disruption from OSA can also trigger morning headaches and increase pain sensitivity.

Neurochemical pathways further connect orofacial function, pain, and sleep. The trigeminovascular system, which plays a key role in migraines, is rich in Calcitonin Gene-Related Peptide (CGRP) a neurochemical that promotes wakefulness and heightens pain sensitivity. Elevated CGRP links disrupted sleep, headache, and orofacial dysfunction.

Additionally, the orexin system, responsible for sleep-wake regulation, influences pain pathways in regions such as the periaqueductal gray and locus coeruleus. When breathing or sleep is impaired, these systems become dysregulated, amplifying the pain response.

Finally, emotional states play a significant role. Difficulty performing deep abdominal breathing is associated with higher anxiety scores. Psychological distress increases the risk of developing musculoskeletal disorders, highlighting the powerful interplay between the emotional, respiratory, and musculoskeletal systems.

References

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