The Well Balanced Equine

04/30/2026

04/30/2026

04/18/2026

Believe what your horse tells you.

Whether they are shouting or whispering or somewhere in between.

I am half way through a two day dissection and this really struck me. It might seem like a given, a no- brainer. But for many it is not. 

Can you train/correct an issue away with relative ease? Great. Does it take concerted effort and does that issue keep slipping back in? It is not a training issue. Or a behavior issue.

If we are going to partake in the incredible privilege of sitting on our horses backs, I do believe that we need to help them carry themselves in the most biomechanically correct way that will help ensure their long-term health.

Horses are simply not built to carry us. I think we forget this. A lot.

Part of that process is allowing them to carry themselves in such a way that works for each individual horse. There are no cookie cutters in true horsemanship. There are no guarantees that your lovely fill-in-the-blank prospect actually has the ability to fulfill that particular purpose.

We have to listen and allow. Be willing to pivot, be willing to substitute our personal goals with, when they don’t align, what our horse actually needs, what our horse is actually capable of doing without being crammed into a frame, drilled into the ground, strapped into place.

Mostly, we need to slow down and just listen and let the horses truth be our truth, too.



04/15/2026

The Vagus Nerve in Horses

Where it runs, what it does, its relationship to fascia, and how to influence it through bodywork and movement

What the Vagus Nerve Is

The Vagus nerve is the primary nerve of the parasympathetic system—the part of the nervous system responsible for rest, recovery, digestion, and regulation.

More than just a motor nerve, roughly 80% of its fibers are sensory, meaning it is constantly carrying information from the body back to the brain. This makes it highly dependent on the state of the tissues it passes through and innervates.

Where It Runs in the Horse

The vagus nerve originates in the brainstem and travels:
• Through the poll and upper cervical region
• Down the neck within the carotid sheath
• Through the thoracic inlet
• Into the thorax (heart and lungs)
• Into the abdomen (digestive organs)

This pathway places it in close relationship with:
• The base of the neck
• The thoracic sling
• The ribcage and sternum
• The diaphragm
• The visceral space

These are all regions where posture, tension, and fascial restriction can influence its function.

What It Does

The vagus nerve regulates core physiological and behavioral functions:
• Heart rate and variability
• Breathing rhythm and depth
• Digestive motility and efficiency
• Inflammatory response
• Ability to down-regulate after stress

In practical terms, it reflects the horse’s ability to shift out of a protective, sympathetic state into a more regulated, adaptive one.

The Fascia Relationship

The vagus nerve exists within the body and is strongly influenced by Fascia.

1. Mechanical Environment

Fascial tension in the neck, thoracic inlet, and ribcage can alter the pressure and mobility of the tissues surrounding vagal pathways.

2. Visceral Fascia

The organs innervated by the vagus are suspended and organized by fascial layers. These layers must be able to glide and deform for normal function.

3. Sensory Input

Fascia is highly innervated and constantly feeding information to the nervous system. Poor tissue quality increases “noise” and can bias the system toward protection.

4. Fluid and Hydration

Healthy fascia supports fluid movement and adaptability. Stiff or dehydrated tissue alters the internal environment the nervous system is reading.

How It Shows Up in the Horse

A horse with better vagal tone tends to show:
• A softer, more mobile neck, jaw and chest
• More regular breathing patterns
• Improved digestion
• Greater ability to settle after stress
• Willingness to engage without bracing or internalizing

A horse with reduced vagal influence may present as:
• Tight through the poll and base of neck
• Restricted ribcage movement
• Shallow or inconsistent breathing
• Digestive sensitivity
• Reactive or guarded behavior

How to Positively Influence It

You are not directly “stimulating” the vagus nerve. You are improving the conditions it depends on.

1. Restore Comfortable Range of Motion

Work the horse through pain-free, controlled movement:
• Lateral bending
• Gentle flexion and extension
• Ribcage mobilization

This improves sensory input and reduces protective guarding.

2. Improve Ribcage and Diaphragm Function

The vagus nerve has strong influence over heart and lungs, which are mechanically tied to the ribcage and diaphragm.
• Encourage rib mobility
• Address sternum and intercostal restrictions
• Support full, rhythmic breathing

3. Address Key Fascial Transitions

Focus on areas where mechanical tension concentrates:
• Poll and upper cervical region
• Base of the neck and thoracic inlet
• Sternum and ventral thorax
• Diaphragm attachments
• Thoracic sling and back muscle

The goal is to restore comfort, glide and adaptability.

4. Use Slow, Sustained Contact

Gentle, consistent input allows the nervous system to shift out of protection.
• Avoid fast, aggressive techniques
• Allow time for the tissue and system to respond
• Work with the horse, not “on” them

5. Include Jaw, Tongue, and Hyoid Work

These structures have strong neurological connections and often influence overall tone.
• Releasing tension here can affect the entire system
• Changes are often reflected in breathing and posture
• This is an extremely delicate and somewhat invasive area that must be addressed carefully and considerably.

6. Reduce Background Stressors

Pain, poor posture, poor nutrition or other environmental stressors and compensatory movement patterns continuously feed the nervous system.
• Improve posture and load distribution
• Reevaluate environmental factors
• Address chronic restrictions
• Support movement quality under saddle and in-hand

The Practical Takeaway

The vagus nerve reflects the internal state of the horse. It is shaped by:
• Tissue quality
• Movement variability
• Mechanical pressure and tension
• The clarity of sensory input
• Emotional balance

When fascia moves well, breath is unrestricted, and movement is organized, the nervous system receives a clearer, safer signal.

That is what improves regulation.

You improve the body the nerve lives in, and the nervous system follows.

https://koperequine.com/how-prosix-affects-posture-movement-and-stress-in-horses/

04/06/2026

Serratus dorsalis
Recently, I was asked about the serratus dorsalis, and I realised it’s one of those muscles we all “know” from books, but rarely really look at in the body.

If we stay with the textbook first, the serratus dorsalis is described as a segmental muscle with multiple semi-separated bellies. It originates from the thoracolumbar fascia and attaches to the ribs, sitting under the latissimus dorsi and covered by the superficial layer of the thoracolumbar fascia. It is divided into a cranial and caudal part, both arising from the deeper layer of the thoracolumbar fascia, but with different fibre directions and rib attachments. The cranial part runs caudoventrally and attaches roughly from the 5th to the 11th or 12th rib, while the caudal part runs cranioventrally and attaches to the last ribs. Functionally, both are described as respiratory muscles—the cranial part assisting inspiration by drawing the ribs forward and outward, and the caudal part assisting expiration by drawing them back. Innervation comes from the thoracic spinal nerves.

All good, all neat, all very logical.

But when you actually look at it in the body, things start to feel a bit less simple.

Across multiple dissections I keep seeing the same pattern. The cranial part has noticeably shorter fibres, but more interesting is that the first two or three bellies are not behaving like the rest of the muscle. They are partially separated, and their aponeurosis blends very specifically with the cranial extension of the thoracolumbar fascia—the structure often referred to as the dorsoscapular ligament. And then there is another detail that keeps catching my eye: those same cranial bellies attach to ribs 5 to 8… exactly the same ribs as the serratus ventralis thoracis.

That makes me pause a bit.

Because now we are no longer just in a “respiratory muscle sitting on the ribs” situation. We are right in the middle of the thoracic sling, in a region where the limb is suspended from the trunk purely by soft tissue—the synsarcosis. And this area is anything but simple.

Under the scapula, the fascia is not just a wrapping layer. It is a highly organised system where collagenous and elastic components transition into each other. You can see it clearly in dissection—the tissue changes character depending on what is needed. Support in one place, compliance in another, but always continuity.

The dorsoscapular ligament, as the cranial continuation of the thoracolumbar fascia, reflects this very well. It is not just a dense sheet. It has a collagenous part, but also elastic components that extend laterally toward the medial surface of the scapula and interdigitate with the serratus ventralis thoracis. When you remove the muscle fibres of the serratus ventralis, those elastic laminae become visible, and you start to see that this is not just “a muscle on a rib”, but a layered system. There is also a continuation back into more collagenous tissue attaching to the cranial ribs, forming what feels like an inner fascial envelope for the serratus ventralis.

And the serratus ventralis itself sits right between these layers. Short fibres, enclosed, supported from both sides. It starts to look much more like a structure designed for controlled load transfer and fine adjustment rather than just simple contraction.

So when I go back to the serratus dorsalis cranialis, especially those first few bellies blending into this system and sharing rib attachments with the serratus ventralis, I can’t help but wonder if calling it purely a respiratory muscle is just… incomplete.

I don’t have an answer for that yet, and I haven’t found anything in the literature that clearly supports another role, so this remains an observation, not a conclusion.

But this is exactly why I love dissection. Because even though we are separating structures, it is the best way to start understanding their continuity. And in this region especially, the body doesn’t behave in isolated parts—it behaves as a connected, adaptive system.

02/16/2026

The Frog Test: A Case Study Every Horse Owner Should See:-

When evaluating a hoof, most eyes go straight to the wall.

Cracks. Chips. Flares. Growth rings.

But what if the real story is hiding in the center?

This case study proves one powerful truth: The frog never lies.

The First Impression:-

At first glance, this hoof didn’t scream emergency. The wall had some distortion. The heels looked slightly contracted. Nothing dramatic enough to cause panic.

But when we looked at the frog — everything changed.

The frog appeared narrow, elongated, and deeply cleft through the central sulcus. Instead of being wide and ground-engaging, it was recessed and tight. The central sulcus was deep enough to trap debris and moisture.

That was our first red flag.

Why the Frog Matters:-

The frog is not just a “soft triangle.” It plays a critical role in:

1) Shock absorption
2) Blood circulation within the hoof
3) Heel expansion
4) Load distribution
5) Proprioception (the horse’s sense of ground)

A healthy frog should be:

1.Wide and full
2.Slightly callused
3.Sharing load with the heels
4.Free of deep central cracks

When the frog becomes narrow and deeply split, it often indicates:

1) Contracted heels
2) Caudal hoof weakness
3) Lack of frog engagement
4) Possible thrush in the central sulcus
5) Chronic imbalance

And that’s exactly what this hoof was showing.

The Hidden Problem

Here’s where it gets interesting.

The wall distortion was actually a symptom — not the root cause.

The deep central sulcus suggested long-term heel contraction. When heels contract, the frog loses proper ground contact. When frog engagement decreases, circulation and digital cushion stimulation decline.

Over time, this can lead to:

1.Poor shock absorption
2.Increased strain on the deep digital flexor tendon
3.Compensatory loading at the toe
4.Eventual lameness risk

The frog was telling us this hoof wasn’t functioning efficiently from the back half.

And most owners would have missed it.

The Solution Strategy:-

Instead of just trimming the wall and making it “look neat,” the approach focused on restoring function:

1)Address heel balance carefully -not aggressively lowering them.
2) Open and clean the central sulcus to eliminate bacterial environment.
3) Encourage frog engagement with proper trim mechanics.
4) Improve environmental management (dry footing, hygiene).
5) Monitor over multiple cycles — because heel rehab takes time.

The goal was not cosmetic correction.

The goal was functional restoration.

Within trim cycles, the frog began widening. The central sulcus became shallower. Heel expansion improved. The hoof started loading more evenly.

That’s the power of reading the frog correctly.

The Takeaway for Horse Owners:-

If you only look at the hoof wall, you’re seeing the surface.

If you look at the frog, you’re seeing the truth.

Next time you pick up your horse’s foot, ask yourself:

1.Is the frog wide and healthy?
2.Is the central sulcus shallow or deep?
3.Are the heels supporting it properly?

Because small frog changes today can prevent major lameness tomorrow.

👉 Want to learn how to read your horse’s frog like a professional?

Follow for more real case studies that break down hoof science in simple, practical terms and help you protect your horse before problems become expensive emergencies.

02/10/2026

Did you know? We can not treat the foot as an isolated mechanical object

The hoof is not a detached unit at the end of the limb. It is part of a continuous biotensegrity system, where load, tension, posture, and neurology are distributed throughout the entire horse.

This relationship is bi-directional.

Changes in hoof balance alter how forces are resolved through the distal limb. That changes internal moments, tendon strain, joint loading, and proprioceptive input. Those changes do not stop at the fetlock or the knee. They propagate proximally through fascia, muscle tone, and postural organisation.

At the same time, posture, rider influence, training patterns, and environmental constraints alter how the horse organises itself under load. That altered organisation feeds back into the hoof, shaping growth, deformation, and long-term morphology.

This is why hoof balance cannot be understood purely as a foot problem, and posture cannot be understood purely as a body problem.

The hoof both expresses whole-body organisation and influences it.

When balance is mechanically efficient, the system distributes load with minimal internal strain. When balance deteriorates, the system compensates. And compensation is not neutral. It redistributes tension elsewhere, often invisibly, until something reaches its limit.

This is also why some horses “cope” for years before failing, and why correcting the hoof alone does not always resolve the problem if the postural drivers remain unchanged.

The goal is not to make the hoof look right in isolation.
The goal is to place the foot in a mechanical relationship that allows the entire horse to organise itself with less effort, less strain, and greater durability.

Hoof balance is not a static endpoint.
It is a participant in a living, adaptive system.

02/02/2026

The Pons: A Quiet Regulator of Posture, Load, and Movement in the Horse and How Gentle Massage Therapy Can Positively Affect it

When we think about movement, training, or performance in horses, attention is often placed on muscles, joints, and conditioning. Yet much of how a horse organizes posture, accepts load, and transitions between effort and ease is governed deeper in the nervous system—within the brainstem.

One key structure in this system is the pons.

The pons is a part of the brainstem located between the midbrain and the medulla. Present in all mammals, including horses, it functions as a major integration and relay center between the brain, cerebellum, and spinal cord. Its role is not conscious control, but regulation—of tone, coordination, breathing rhythms, arousal, and readiness for movement.

Because horses rely heavily on subcortical control to manage posture and gravity across four limbs, the pons plays a particularly important role in how their bodies feel and function.

What the pons does

The pons contributes to several essential processes that shape movement quality:

Postural tone and extension

Through its influence on brainstem motor pathways—especially the reticulospinal system—the pons helps regulate baseline extensor (anti-gravity) tone. This tone allows the horse to stand, bear weight, and stabilize the body under load without conscious effort.

When this system is well regulated, extensors provide support without rigidity. When overactivated, posture may become braced or heavy. When under-supported, posture may feel collapsed or unstable.

Coordination and timing

The pons serves as a communication hub between higher brain centers and the cerebellum, contributing to rhythm, timing, and smooth coordination rather than raw force production.

Breathing and state regulation

The pons plays a role in shaping breathing patterns and in transitions between states such as alertness, rest, and readiness. Breathing, posture, and muscle tone are closely linked at the brainstem level.

Sensory integration

The pons receives and integrates large amounts of sensory information—particularly from the face, head, neck, and upper cervical region. This sensory input helps determine how much tone and support the body believes it needs at any given moment.

The pons and forelimb load

The influence of the pons is especially evident in the forelimbs.

In horses, approximately 60–65% of body weight is carried through the forelimbs. These limbs function primarily in support and braking, making them highly dependent on brainstem-regulated extensor tone rather than voluntary motor control.

When pons-mediated tone is elevated, the forelimbs may appear rigid, heavy, or braced, even in the absence of pain or structural limitation. Load is often resisted rather than absorbed, and movement through the shoulder and thoracic sling can become restricted.

When regulation improves, forelimb extension becomes more elastic and responsive. Load is accepted and redirected rather than held, allowing smoother landings, improved coordination through the shoulder, and more efficient weight transfer through the body.

This helps explain why changes in posture and movement are often seen first in the front end following work that does not directly target the limbs.

Why horses can look sound but move poorly

Much of what is described as stiffness, resistance, or heaviness is not a failure of strength or training, but a state of nervous system protection.

A horse may be:
• sound yet effortful
• strong yet rigid
• willing yet guarded

In these cases, the nervous system—via brainstem structures like the pons—is increasing tone to ensure safety under load. This process occurs below conscious control. The horse is not choosing to brace; the system is organizing itself around perceived demand and uncertainty.

Fascial touch and brainstem regulation

The pons is particularly responsive to sensory input, not instruction or force. This is where gentle fascial touch becomes relevant.

Fascia is richly innervated with mechanoreceptors that provide continuous feedback to the nervous system. When touch is slow, non-threatening, and well regulated, it can influence how sensory information is processed at the brainstem level.

Why the face and neck matter

The face, jaw, poll, and upper cervical region are densely connected to cranial nerves and brainstem nuclei associated with the pons.

Gentle fascial work in these regions can:
• Clarify sensory input entering the brainstem
• Reduce excessive protective signaling
• Support a shift from high-alert tone to organized support
• Influence breathing patterns and overall state

This does not “stimulate” the pons in a forceful sense. Instead, it modulates the sensory environment the pons uses to determine how much tone and readiness are required.

Because the forelimbs are the primary load-bearing limbs, they are often the first place changes appear when brainstem tone regulation improves.

From regulation to movement

When brainstem-mediated tone becomes more appropriate:
• Extensor support becomes elastic rather than rigid
• Load is accepted instead of resisted
• Movement feels lighter and more coordinated
• Transitions between gaits and tasks improve

These changes are frequently global rather than local. A horse may move differently through the entire body even though touch was applied only to the face or neck. This reflects the integrative nature of the nervous and fascial systems, not a localized mechanical effect.

An important distinction

Fascial release and gentle touch do not create posture or movement. They do not impose change on the horse.

Instead, they help create conditions in which the nervous system no longer needs to rely on excessive tone to feel safe. When unnecessary guarding decreases, organization, elasticity, and efficiency emerge naturally.

This is why changes in posture, forelimb use, or stride quality often appear before any change in strength or conditioning. Regulation precedes performance.

Caring for the horse as a regulated system

Understanding the role of the pons reframes how we think about care. The horse’s body is not simply a mechanical structure to be adjusted, but a regulated system constantly balancing support, safety, and adaptability.

Gentle fascial touch—particularly when applied with attention to the face, neck, and overall state—can support this balance by improving sensory clarity and reducing unnecessary protective tone.

In doing so, it supports not just relaxation, but organized readiness: the kind of posture and movement that is stable, elastic, and sustainable over time.

https://koperequine.com/articles/

01/20/2026

Part 1: What is fascia and why is it important? Synopsis: Join Scientist Robert Schleip and a team of experts on a fascinating journey exploring the missing…

01/14/2026