As a chiropractor, I spend a great deal of my day helping people understand the connection between how their bodies move, how they feel, and how they function. One of the most overlooked, but most powerful, tools for improving posture, decreasing pain, and enhancing core stability is something we all do thousands of times a day: breathing.

Most people assume breathing is automatic and, therefore, not worth much attention. While it’s true that breathing happens without conscious effort, how you breathe makes a profound difference in muscle tension, spinal stability, and nervous system regulation. In my clinical experience, many patients with chronic neck pain, shoulder tension, headaches, and even low back pain are not breathing efficiently. Instead of using their diaphragm and abdominal muscles, they rely heavily on accessory breathing muscles in the neck and upper chest.

This article explores why abdominal, or diaphragmatic, breathing is so important, how poor breathing patterns contribute to neck and accessory muscle tension, and how proper breathing can dramatically improve core engagement and overall movement quality.

Understanding How We’re Designed to Breathe

The primary muscle of respiration is the diaphragm, a dome-shaped muscle that separates the chest cavity from the abdominal cavity. When you inhale properly, the diaphragm contracts and moves downward, creating negative pressure that draws air into the lungs. As it descends, the abdominal contents gently move outward, causing the belly to expand.

This is abdominal breathing.

When you exhale, the diaphragm relaxes and rises upward, air leaves the lungs, and the abdominal wall gently recoils. This pattern is efficient, relaxed, and biomechanically sound.

However, many people have lost this natural breathing pattern. Instead of breathing low and wide into the abdomen and rib cage, they breathe high and shallow into the chest. This shifts the workload away from the diaphragm and onto secondary, or accessory, breathing muscles.

What Are Accessory Breathing Muscles?

Accessory breathing muscles include the upper trapezius, sternocleidomastoid (SCM), levator scapulae, scalene muscles, and pectoralis minor.

These muscles are designed to assist with breathing during times of increased demand, such as intense exercise or respiratory distress. They are not intended to serve as the primary breathing muscles while at rest.

When these muscles are chronically overused for breathing, they become tight, overactive, and fatigued. Clinically, this often presents as chronic neck and shoulder tension, stiffness, or pain at the base of the skull, headaches and migraines, forward head posture, and even jaw tension or TMJ dysfunction.

Many of the complaints patients bring into a chiropractic office can be directly related to how they breathe throughout the day.

Why So Many People Breathe Incorrectly

Modern lifestyles create the perfect environment for dysfunctional breathing patterns.

Chronic stress activates the sympathetic nervous system, the body’s fight-or-flight response, which naturally promotes shallow, rapid breathing. Over time, this pattern can become automatic.

Prolonged sitting and poor posture also contribute significantly. Spending hours in a slouched or forward-head position compresses the diaphragm and rib cage, making abdominal breathing more difficult and encouraging chest breathing instead.

Core weakness or poor core coordination can further complicate the issue. When the deep core muscles are not functioning properly, the body often compensates by creating tension through the neck, shoulders, and lower back.

Finally, many adults simply lack awareness of how they breathe. Because breathing happens automatically, dysfunctional patterns often go unnoticed and uncorrected.

The Link Between Breathing and Neck Tension

One of the most important concepts I teach patients is that breathing is a postural activity.

When breathing mechanics are poor, posture inevitably suffers. If you’re constantly lifting your rib cage and shoulders to inhale, your neck muscles never have the opportunity to relax. Over time, this creates chronic muscle tension, reduced circulation, and trigger point development.

In the chiropractic setting, we may adjust the spine, mobilize joints, and release soft tissue restrictions, but if a patient continues to breathe improperly, those tight muscles are continually being reinforced.

Abdominal breathing allows the neck and shoulder muscles to step away from their breathing duties. When the diaphragm functions properly, accessory muscles can return to their intended role, supporting head and shoulder movement rather than sustaining respiration.

Breathing and the Core: More Than Just Abs

When most people hear the word “core,” they think of six-pack abs. In reality, the core is a complex and integrated system designed to stabilize the spine and pelvis.

The deep core system consists of the diaphragm at the top, the transverse abdominis at the front and sides, the multifidus muscles along the spine, and the pelvic floor at the bottom. Together, these muscles create intra-abdominal pressure that stabilizes the spine during movement.

The key concept is that the diaphragm is both a breathing muscle and a core muscle.

If you are not breathing with your diaphragm, your core cannot function optimally.

How Abdominal Breathing Improves Core Engagement

During a diaphragmatic inhale, the diaphragm descends while the abdominal wall gently expands. This expansion is not a relaxation of the core but rather a coordinated and controlled movement.

As the diaphragm moves downward, the transverse abdominis responds by controlling abdominal expansion, the pelvic floor lengthens slightly, and the deep spinal stabilizers engage reflexively.

During exhalation, these muscles recoil and gently contract.

This rhythmic pressure system creates a spine that is both stable and adaptable, exactly what we want for everyday activities, athletic performance, and injury prevention.

In contrast, chest breathing disrupts this system. The diaphragm remains elevated, the abdominal wall becomes either tense or underactive, and spinal stability is compromised. This often results in excessive bracing, low back stiffness, and overreliance on superficial muscles for stability.

Breathing, Movement, and Pain

One of the most powerful shifts patients experience when learning abdominal breathing is improved movement efficiency.

Proper breathing reduces unnecessary muscle tension, improves spinal alignment, enhances coordination between the upper and lower body, and decreases stress on both the neck and lower back.

For athletes, this can mean improved performance and reduced injury risk. For desk workers, it often translates into less discomfort at the end of the day. For individuals dealing with chronic pain, breathing retraining can be the missing piece that finally allows meaningful progress.

I often remind patients that you cannot out-stretch or out-adjust a poor breathing pattern.

Nervous System Benefits of Abdominal Breathing

The benefits of diaphragmatic breathing extend far beyond muscles and joints.

Slow, deep breathing stimulates the vagus nerve and promotes parasympathetic nervous system activity, the body’s rest-and-digest state. This shift helps reduce stress and anxiety, lower muscle tension, improve sleep quality, enhance digestion, and support recovery and healing.

When the nervous system is calmer, muscles naturally relax, pain sensitivity decreases, and the body becomes more responsive to chiropractic care and rehabilitation exercises.

Common Signs You’re Not Breathing Abdominally

Many people are unaware that their breathing pattern may be contributing to their symptoms.

Common indicators include shoulders rising during inhalation, a belly that remains flat or pulls inward while breathing, frequent neck or upper back tightness, difficulty engaging the core during exercise, feeling short of breath during mild activity, and chronic jaw clenching or headaches.

The encouraging news is that breathing patterns are highly trainable at any age.

How to Practice Abdominal Breathing

A simple exercise can help retrain your breathing mechanics.

Begin by lying on your back with your knees bent or sitting upright with good posture. Place one hand on your chest and the other on your abdomen. Slowly inhale through your nose and focus on allowing the belly and lower ribs to expand while keeping the chest relatively relaxed. Then exhale slowly through your nose or mouth, allowing the belly to gently fall.

The movement should feel smooth and effortless rather than forced.

Start with five minutes once or twice daily. Over time, this pattern should begin to transfer into your everyday breathing habits.

Integrating Breathing Into Daily Activities

Breathing retraining should not remain an isolated exercise.

As your awareness improves, begin incorporating abdominal breathing while sitting at your desk, walking, strength training, stretching, lifting objects, and performing rehabilitation exercises.

The ultimate goal is to make diaphragmatic breathing your default breathing pattern rather than something you only practice occasionally.

A Chiropractor’s Perspective: Treat the Cause, Not Just the Symptom

In chiropractic care, our goal is not simply to relieve pain but to improve function, movement quality, and resilience.

Abdominal breathing is a foundational skill that supports spinal health, posture, and efficient movement. When patients learn to breathe properly, adjustments often hold longer, muscles respond more effectively to treatment, core strength improves naturally, neck and shoulder tension decreases, and overall body awareness improves.

Breathing may seem simple, but its impact is anything but small.

Final Thoughts

If you’re dealing with chronic neck tension, poor posture, or difficulty engaging your core, don’t overlook your breathing. Abdominal breathing is one of the most accessible and effective ways to reduce reliance on accessory muscles, calm the nervous system, and restore proper core function.

As a chiropractor, I’ve seen firsthand how transformative this shift can be. When you breathe better, you move better, and when you move better, your body has the opportunity to heal, adapt, and thrive.

Sometimes, the most powerful changes start with something as simple as a breath.

Content Provided By Dr. Chloe Goodwin, Chiropractic Physician