Why Your Core 'Doesn't Work' (The Breathing Connection You're Missing)
You've been doing core work religiously.
Planks. Side planks. Dead bugs. Bird dogs. Pallof presses. Ab rollouts.
You can hold a plank for 2 minutes. Maybe longer.
But here's the frustrating part:
You still don't feel stable.
Your back still hurts when you lift heavy. You still feel wobbly during squats. Your posture still collapses forward after an hour at your desk.
If you can hold a 2-minute plank, shouldn't your core be strong?
The answer: Your core might be strong, but it's not functioning properly.
And the missing piece—the one almost no one talks about—is breathing.
At Spheric Human Performance on Beach Road, we see this constantly: people doing endless core exercises with zero improvement in stability, pain, or posture. Not because they're not trying hard enough—but because their breathing mechanics are dysfunctional.
Let me explain why your core can't work without proper breathing—and how to fix it.
What Is Your "Core" Really?
First, let's clarify what we mean by "core."
Most people think core = abs (rectus abdominis, the six-pack muscle).
But your true core is a cylinder of muscles that surrounds and stabilizes your spine and pelvis:
Top: Diaphragm (your primary breathing muscle)
Front: Abdominals (rectus abdominis, transverse abdominis, obliques)
Back: Multifidus and erector spinae
Bottom: Pelvic floor
Sides: Obliques, quadratus lumborum
Notice what's at the top of this list: the diaphragm.
Your diaphragm isn't just for breathing—it's a core stability muscle. In fact, it's the most important one.
If your diaphragm isn't working properly, your core cannot stabilize effectively—no matter how many planks you do.
The Breathing-Core Connection: Why It Matters
Here's what should happen when you breathe properly:
Inhale (Diaphragmatic Breathing):
Your diaphragm contracts and moves downward
Your ribcage expands in 360° (front, sides, back)
Your belly expands slightly
Intra-abdominal pressure increases
This pressure stabilizes your spine
Exhale:
Your diaphragm relaxes and moves upward
Your abs gently engage to push air out
Your ribcage returns to resting position
Your pelvic floor lifts slightly
This coordinated movement creates intra-abdominal pressure (IAP)—a pressurized cylinder that supports your spine from the inside, like an internal weight belt.
But here's what happens when breathing is dysfunctional:
You breathe into your upper chest instead of your belly
Your diaphragm stays elevated and doesn't move much
Your ribs stay flared upward
Your abs can't engage effectively
Your lower back overarches (anterior pelvic tilt)
Your core can't create stabilizing pressure
Result: No matter how many core exercises you do, you won't feel stable—because your breathing mechanics are sabotaging core function.
Real Story: Breathing Exercises Reduced Knee Pain Significantly
Dominic Cordeiro's experience illustrates the power of breathing for core stability and pain relief.
Dominic had intermittent knee pain for 4-5 years, tried traditional physiotherapy twice, but the injuries kept returning.
When he came to Spheric to work with Coach WH, something unexpected happened:
"Within the initial assessment, Coach WH walked through a few breathing exercises and targeted stretches to restore mobility to my body, reducing the knee pain significantly!"
Wait—breathing exercises for knee pain?
Yes. Here's why:
When breathing mechanics are dysfunctional:
Your core can't stabilize properly
Your pelvis shifts into poor positions
Your hip mechanics change
Your knee has to compensate
By restoring proper breathing, Coach WH helped Dominic:
Re-establish core stability
Improve pelvic positioning
Reduce compensatory stress on his knee
After just 4 sessions, Dominic "was able to run pain free"—not because he did more knee strengthening, but because his breathing and core function were restored.
(Based on verified Google review by Dominic Cordeiro)
Why "Just Do More Core Work" Doesn't Fix the Problem
Let's be honest about what most people try:
Approach #1: More Planks
You hold planks longer and longer. Maybe you add weight on your back.
The problem: If you're breathing into your chest and ribs are flared upward during the plank, you're reinforcing dysfunctional breathing—not training your core properly.
Approach #2: Crunches and Sit-Ups
You do hundreds of crunches thinking it'll strengthen your abs.
The problem: These exercises train your abs in isolation, not as part of a functional core system. They don't teach your diaphragm, pelvic floor, and abs to work together.
Approach #3: Bracing Your Abs All Day
You try to "engage your core" constantly—sucking your belly in or bracing like you're about to be punched.
The problem: Chronic bracing restricts diaphragm movement, limiting breathing and creating more tension—not stability.
How Dysfunctional Breathing Sabotages Your Core
Let's look at specific ways poor breathing prevents your core from working:
Problem #1: Chest Breathing Keeps Your Ribs Flared
If you breathe into your upper chest (sternum rising), your ribs stay elevated and flared forward.
When your ribs are flared:
Your diaphragm is stretched and can't contract effectively
Your abs are lengthened and can't engage properly
Your lower back compensates by overarching
You have anterior pelvic tilt
Result: You feel unstable, your back hurts, and no amount of ab work fixes it—because your ribs are in the wrong position.
Problem #2: Shallow Breathing Reduces Intra-Abdominal Pressure
If you breathe shallowly, you don't create enough intra-abdominal pressure to stabilize your spine.
Think of your core like a balloon. If the balloon is only half-inflated, it's floppy and unstable. When fully inflated, it's rigid and supportive.
Shallow breathing = half-inflated balloon = poor core stability.
Problem #3: Poor Breathing Creates Neck and Shoulder Tension
When your diaphragm doesn't work well, your body recruits accessory breathing muscles in your neck and shoulders (scalenes, upper traps, levator scapulae).
These muscles aren't designed for primary breathing—so they get overworked, creating:
Chronic neck tension
Shoulder tightness
Headaches
Forward head posture
Meanwhile, your core still doesn't work properly.
Problem #4: Dysfunctional Breathing Affects Pelvic Floor
Your pelvic floor and diaphragm work together—they move in sync.
Inhale: diaphragm down, pelvic floor relaxes
Exhale: diaphragm up, pelvic floor lifts
If your diaphragm doesn't move properly, your pelvic floor can't coordinate—leading to:
Pelvic floor dysfunction
Lower back pain
Hip pain
Core instability
How to Tell If Your Breathing Is Dysfunctional
Try this simple test:
The Breathing Assessment:
Lie on your back with knees bent, feet flat
Place one hand on your chest, one on your belly
Take a normal breath in through your nose
Which hand moves more?
Result:
Belly hand moves more: Good—you're using your diaphragm
Chest hand moves more: Dysfunctional—you're chest breathing
Both move equally: Okay, but could be better
The Rib Expansion Test:
Sit or stand comfortably
Wrap your hands around the sides of your lower ribs (like you're holding a basketball)
Take a deep breath in through your nose
Do your ribs expand sideways into your hands? Or does your chest just rise upward?
Result:
Ribs expand 360° (front, sides, back): Good diaphragmatic breathing
Only chest rises, ribs don't expand much: Dysfunctional breathing
What Actually Works: Restoring Breathing and Core Function
At Spheric Human Performance, we don't just give you more core exercises. We restore breathing mechanics first—because without it, your core can't function.
Step 1: Teach Diaphragmatic Breathing
We start with simple breathing drills that:
Teach your diaphragm to move properly
Expand your ribs in 360°
Allow your belly to rise and fall naturally
Create intra-abdominal pressure
Example drill: 90-90 breathing (lie on back, knees bent, feet flat—breathe into sides and back of ribs)
Step 2: Restore Rib Position
If your ribs are flared upward, we use breathing and positional exercises to:
Drop your ribs down
Reduce excessive lumbar arch
Allow your abs to shorten and engage properly
Step 3: Integrate Breathing with Movement
Once breathing is restored, we teach you to maintain proper breathing during:
Core exercises (planks, dead bugs, etc.)
Lifting and squatting
Daily activities
Sports and training
This is where true core stability develops—when breathing and movement are coordinated.
Step 4: Progress to Loaded Core Work
Only after breathing mechanics are solid do we add challenging core exercises.
Now, when you do a plank, your:
Diaphragm is positioned well
Ribs are down
Abs can engage effectively
Core creates real stability
Result: Core exercises finally work—because your foundation (breathing) is correct.
Simple Breathing Drills You Can Try Right Now
Drill 1: 90-90 Breathing (Foundational)
Lie on your back, knees bent, feet flat on floor
Place hands on the sides of your lower ribs
Inhale through nose for 4 counts—feel ribs expand sideways and into the floor (not just belly rising)
Exhale through mouth for 6 counts—feel ribs come back down
Focus on expanding ribs in 360°, not just forward
5 minutes, twice daily
What it does: Restores diaphragm function, drops ribs down, reduces lumbar arch
Drill 2: Crocodile Breathing (Increases Awareness)
Lie face down (prone) with forehead resting on hands
Breathe into your back and sides—feel your lower back rise with each inhale
This position makes it nearly impossible to chest breathe
3-5 minutes daily
What it does: Forces diaphragmatic breathing, increases awareness of back rib expansion
Drill 3: Breathing During Dead Bug (Integration)
Lie on back, knees bent at 90°, arms reaching toward ceiling
Flatten lower back into floor (this is key—maintain throughout)
Inhale through nose
Exhale slowly while extending one leg and opposite arm
Inhale as you return to start
Repeat, alternating sides
Focus on maintaining flat lower back and steady breathing
What it does: Integrates breathing with core stability during movement
Why Breathing Is the Foundation for Everything
Once breathing is restored, clients often report improvements beyond just core stability:
Pain reduction (back, neck, hip, knee—like Dominic experienced)
Better posture (ribs down, pelvis neutral)
Improved sleep quality (more relaxed nervous system)
Less stress and tension (shift from sympathetic to parasympathetic nervous system)
Better performance (lifting, running, sports)
This is why breathing appears in nearly every blog post we've written—it's not just one technique among many. It's the foundation that allows everything else to work.
Common Myths About Core Training
Myth #1: "Planks Are Enough for Core Strength"
Reality: Planks are great—if done with proper breathing and rib position. Without that, you're just holding a dysfunctional position longer.
Myth #2: "Suck Your Belly In for Good Posture"
Reality: Sucking your belly in restricts diaphragm movement and creates more dysfunction. Proper core engagement is subtle, not forced.
Myth #3: "Core Work Should Burn"
Reality: Core stability is about coordination and control, not just muscle fatigue. If your abs are burning but you're still unstable, you're missing the point.
Myth #4: "I Need a Stronger Core"
Reality: You might not need a stronger core—you might need a core that functions properly. Strength without proper mechanics is useless.
When Should You Seek Professional Help?
Consider a breathing and core assessment if:
You do core work regularly but still feel unstable
You experience chronic lower back pain despite "strong" abs
You have neck and shoulder tension that won't go away
Your posture collapses after sitting for periods
You feel like you can't "find" your core during exercises
You want to improve performance in gym, sports, or daily life
At Spheric, we assess breathing mechanics as part of every initial evaluation—because it affects everything.Ready to Fix Your Core Function?
If you're near Beach Road, Bugis, Esplanade, or City Hall, come in for a comprehensive breathing and movement assessment.
Get Started:
👉 Book your $39 trial assessment
Discover why your core doesn't work—and learn how to restore breathing mechanics for true stability.
What's included:
Breathing mechanics assessment
Rib position and posture evaluation
Core activation and stability testing
Personalized breathing drills
Integration exercises for daily life and training
Location: 43C Beach Road, Singapore 189681 (next to Esplanade MRT)
About Spheric Human Performance
We specialize in restoring foundational movement patterns—breathing, posture, and core stability—that allow everything else to work. Whether you're dealing with chronic pain, movement limitations, or performance plateaus, we address the root causes that standard training overlooks.