Could Trauma Be Trapping Inflammation in the Body? What Fascia, Lymph and Bikram Yoga May Have to Do With It: Part 1 of 4

Why I’m looking at the 90-minute Bikram 26+2 series differently

Sometimes research starts with a laboratory.

Sometimes it starts with noticing the same pattern in two people you care about.

I am a physical therapist, and lately I have been trying to understand something that has become very personal to me.

My daughter and one of my coworkers are both in their 30s. Neither of them spent their earlier lives reacting severely to foods.

Now they both live with extraordinary inflammatory and allergic-type reactions.

Foods that most of us would never think twice about can trigger significant reactions. At times those reactions have been severe enough to require an EpiPen and emergency treatment with medications such as IV diphenhydramine and steroids.

Their diets have become remarkably restricted. Chicken and rice are staples. Some salad vegetables are tolerated; others aren’t. My daughter reacts to onions, garlic and most nuts. Both report problems with many manufactured products, including various vitamins and supplements.

Their physicians are appropriately responsible for diagnosing and treating those reactions. Nothing I discuss here replaces allergy evaluation, emergency treatment or prescribed medication.

But as a physical therapist—and as a mother—I kept asking another question:

Why did their bodies change?

And then I noticed something else they had in common.

They were both extraordinarily tight.

The Observation That Started Me Thinking

My daughter is profoundly inflexible.

When she bends forward, her hands reach only approximately to her knees, and even then she needs to bend her knees considerably.

This isn’t simply someone who can’t touch her toes.

Her entire posterior chain seems restricted.

My coworker has had a very different presentation, but again I noticed extreme restriction. Her neck has been extraordinarily tight. She developed pain, numbness and tingling extending down her arms and into her hands and ultimately underwent cervical fusion surgery to address the neurological symptoms originating from her neck.

Two very different women.

Two very different medical histories.

But I kept seeing three things:

severe trauma

extreme musculoskeletal/fascial tightness

severe chronic inflammatory or immune-type symptoms

And that made me start looking at an organ system that we don’t talk about nearly enough:

the lymphatic system.

The Memory From Anatomy Lab That Came Back to Me

Years ago, while studying anatomy, I dissected a cadaver.

I could clearly see the arteries.

I could clearly see the veins.

But I remember asking my professor:

“Where are the lymphatic vessels?”

His explanation stayed with me.

Lymphatic vessels are extraordinarily thin and delicate. When they no longer contain fluid and pressure, many of these tiny vessels collapse and become extremely difficult to see during ordinary dissection.

The image that remained in my mind was something almost like collapsed lace.

Years later, thinking about my daughter and my coworker, that memory suddenly mattered.

The lymphatic system isn’t a collection of big rigid pipes.

It is a delicate network running through the tissues of our entire body.

And unlike our cardiovascular system, lymph doesn’t have one central heart pumping it around.

That sent me down a rabbit hole.

How Does Lymph Actually Move?

The lymphatic system has its own intrinsic pumping mechanism. Collecting lymphatic vessels contain muscle cells that contract rhythmically.

But that is only part of the story.

A major review of lymphatic physiology explains that lymphatics also use “cyclical compression and expansion…by surrounding tissue forces.” (PubMed)

In other words:

Our tissues help move our lymph.

Muscular contraction, changes in tissue pressure, breathing, body movement and compression all influence lymphatic transport.

Another review puts it beautifully: lymphatic vessels drain and propel lymph partly by exploiting “external forces that surrounding tissues exert upon vessel walls.” (PubMed)

That sentence stopped me.

Because suddenly I was no longer thinking only about lymph vessels.

I was thinking about the tissue surrounding them.

And much of that tissue is fascia.

What Is Fascia?

Most of us were originally taught anatomy by separating the body into pieces:

muscletendonligamentnervearteryveinorgan.

But fascia does not respect those neat textbook boundaries.

Fascia is an interconnected connective-tissue network that surrounds and connects muscles, bones, nerves, blood vessels and organs.

Thomas Myers popularized a way of looking at this interconnected system in Anatomy Trains, describing long myofascial continuities that travel across the body.

I have always found those diagrams fascinating because they resemble what I see when looking at whole-body yoga postures.

But are these “myofascial meridians” real?

There is actually meaningful anatomical evidence that at least several of them are.

A systematic review examining 62 anatomical studies found strong evidence supporting the anatomical continuity of the Superficial Back Line, Back Functional Line and Front Functional Line. (PubMed)

A second systematic review looked at whether force can actually travel between tissues along these chains. The researchers concluded that “tension can be transferred between some of the examined adjacent structures.” (PubMed)

More recent research continues to support significant anatomical myofascial continuity, although not every proposed Anatomy Trains line has been validated equally. (PubMed)

So fascia isn’t simply plastic wrapping around isolated muscles.

Mechanical forces can be distributed across connected tissues.

Then I Asked the Bigger Question: What Does Trauma Do to This System?

This is where the story becomes especially interesting—but also where we have to be careful not to claim more than science has demonstrated.

We know that psychological trauma and chronic stress can alter the autonomic nervous system and stress-response systems.

We also know something fascinating about fascia.

It isn’t necessarily completely passive tissue.

Fascia contains fibroblasts and, under certain circumstances, myofibroblasts—cells capable of producing contractile force.

Research examining human fascial tissue has found myofibroblasts within fascia, and experimental fascial tissue has demonstrated measurable contraction in response to biochemical stimulation. (PubMed)

Myofibroblasts are particularly interesting because they respond to mechanical tension and signaling molecules such as TGF-β1.

One review summarizes it simply: “mechanical stress and transforming growth factor beta” are two major factors supporting the myofibroblast phenotype. (PubMed)

There is also laboratory evidence that norepinephrine—one of the chemicals involved in sympathetic “fight or flight” activity—can enhance TGF-β-related fibrotic signaling in certain fibroblasts. This does not prove that psychological trauma causes whole-body fascial fibrosis, but it provides one biologically plausible connection between stress physiology and connective-tissue remodeling. (PubMed)

And a 2026 review examining what researchers call the stress–fascia–pain axis brought many of these pieces together. It describes evidence connecting stress-related autonomic and endocrine dysregulation with fascial biomechanics, myofibroblast activity, impaired tissue gliding and persistent myofascial pain. (PubMed)

Again:

That does not mean science has proven that emotional trauma becomes physically “stored in the fascia.”

But it gives us something far more interesting than a slogan.

It gives us a physiological hypothesis.

Trauma → Protection → Tightness?

After severe trauma, the nervous system can remain highly protective.

Imagine living with your shoulders elevated.

Your jaw clenched.

Your breathing shallow.

Your abdominal muscles guarded.

Your neck stiff.

Your hips held.

Your entire body preparing for something that already happened.

Now imagine doing that not for five minutes, but repeatedly for months or years.

Muscles adapt.

Movement changes.

Joint range decreases.

Connective tissues experience different mechanical loads.

The nervous system learns the posture.

The body can essentially become very good at protecting itself.

The question that began forming in my mind was:

What happens to lymph movement when the tissues surrounding those extremely delicate vessels stop moving normally?

We don’t yet have research proving that trauma-induced fascial tightness causes systemic lymphatic failure.

But we do know that lymphatic transport depends partly on movement and external tissue forces.

That matters.

And What Happens When Lymphatic Function Is Impaired?

Here another important piece fell into place.

The lymphatic system isn’t simply a sewer system removing “toxins.”

That popular description dramatically understates its importance.

The lymphatic system helps maintain fluid balance and transports immune cells, proteins, lipids and other substances through tissues and lymph nodes.

It is intimately involved in immune surveillance and regulation. (PubMed)

And when lymphatic drainage is significantly impaired, inflammation and fibrosis can reinforce one another.

A major review of lymphedema research describes a cycle in which lymphatic injury activates chronic immune responses that promote fibrosis, lymphatic leakiness and decreased lymphatic pumping. (PubMed Central (PMC))

A comprehensive 2025 review describes it another way:

“lymphatic stasis drives inflammation, fibrosis, and hypoxia,” which can further reinforce lymphatic dysfunction. (PubMed Central (PMC))

That gives us a vicious cycle:

poor lymphatic transport↓persistent inflammatory environment↓fibrosis and tissue remodeling↓greater tissue stiffness↓additional difficulty with lymphatic transport

We know this cycle occurs in established lymphatic disease.

What we do not yet know is whether milder alterations in tissue mobility and lymphatic transport contribute meaningfully to the kind of systemic inflammatory conditions I am observing.

That remains my question.

Then There Was One More Similarity Between These Two Women

Trauma.

Severe trauma.

My coworker lost her live-in boyfriend in a motorcycle accident.

She wasn’t waiting at home when it happened.

She was on the motorcycle with him.

My daughter’s trauma came differently.

Her father died when she was only 12.

Then her brother died when she was 20.

Those aren’t ordinary stressful events.

They are enormous events in a young nervous system.

And neither woman had always experienced their current degree of inflammatory reactivity.

Their illnesses became severe later.

I want to emphasize something important here:

Two people are not a clinical trial.

Their histories don’t prove causation.

Their symptoms may involve completely different immunological processes. Severe food-triggered reactions require appropriate medical evaluation, and conditions involving allergy, mast-cell activation or other immune disorders cannot be diagnosed by looking at flexibility or trauma history.

But good clinical questions often begin with observation.

As a mother and physical therapist, I kept looking at what these two women had in common.

And I couldn’t stop wondering:

Could severe trauma contribute to long-term nervous-system guarding?

Could guarding contribute to profound loss of tissue mobility?

Could that altered mechanical environment reduce one of the external mechanisms that normally assists lymph movement?

Could impaired lymph transport then contribute to an inflammatory environment?

And could inflammation itself create additional fibrosis and stiffness, producing a self-perpetuating loop?

We don’t know.

But every individual step is interesting enough that I believe the question deserves attention.

Which Brought Me Back to Bikram Yoga

I have practiced and taught movement for decades.

I’ve studied physical therapy, Pilates, yoga and many different approaches to mobility.

And when I look at the traditional 90-minute Bikram 26+2 sequence, I see something different now.

I don’t simply see yoga poses.

I see a standardized 90-minute whole-body mechanical sequence.

Think about what repeatedly happens:

contractlengthencompressreleaserotateextendflexbalancebreathecompress againrelease again

And it occurs from the feet all the way to the head.

Anatomy Trains Helped Me See the Sequence Differently

Open Anatomy Trains and look at the Superficial Back Line.

It travels from the plantar surface of the feet, through the posterior legs and spine, and toward the head.

Now look at a yoga posture producing simultaneous dorsiflexion, knee extension, hip flexion and spinal flexion.

We’re no longer talking about “stretching a hamstring.”

We’re placing mechanical tension across multiple connected tissues at once.

That idea has scientific support.

Research demonstrates anatomical continuity in several of these myofascial chains and shows that mechanical force can sometimes transmit between adjacent tissues along them. (PubMed)

This is exactly why I find the 26+2 sequence so intriguing.

Over 90 minutes, it systematically puts the body through extensive combinations of:

standingbalancingforward bendingbackward bendingrotationhip openingknee flexionspinal extensionspinal flexionmuscular contractionrelaxationand controlled breathing.

Instead of stretching one muscle for thirty seconds, the body repeatedly loads and unloads long interconnected tissue chains.

Now Add the Lymphatic System

Remember what lymphatic physiologists tell us:

Lymphatic flow is partly assisted through the cyclical compression and expansion of lymphatic vessels by surrounding tissues. (PubMed)

That means movement matters.

Compression matters.

Release matters.

Breathing matters.

Muscle contraction matters.

Changing tissue pressure matters.

Researchers studying lymphatic pumping specifically describe mechanical stimuli including pressure, stretch and flow as regulators of lymphatic function. (PubMed)

Now look again at 90 minutes of 26+2.

From a physical therapist’s perspective, it begins to look like:

whole-body compression + decompression + contraction + elongation + breathing + movement

repeated systematically throughout the body.

That is why I am becoming interested in Bikram yoga not simply as a flexibility program, but as a possible whole-body mechanical stimulus to the tissue environment surrounding the lymphatic system.

That hypothesis has not yet been proven.

But physiologically, I think it deserves investigation.

What About Inflammation?

There is another promising piece of evidence.

Yoga research has examined inflammatory markers including:

IL-6TNF-αC-reactive protein

A 2024 systematic review and meta-analysis examined 26 randomized controlled trials. Most individual studies reported favorable changes in inflammatory markers among people practicing yoga.

However, when results were pooled, the overall reductions weren’t statistically significant, and most studies had a high risk of bias.

The researchers therefore concluded that yoga may be useful as a complementary intervention while acknowledging that “the quality of the evidence is poor.” (PubMed)

That is important.

We shouldn’t turn promising evidence into certainty.

But we shouldn’t ignore promising evidence either.

And Bikram Has Another Interesting Finding

One randomized controlled study specifically examined heated hatha/Bikram yoga.

Fifty-two women were randomized to eight weeks of Bikram yoga or a control group.

Among women who initially showed high cortisol responses to stress, the Bikram group demonstrated a significantly larger decrease in cortisol reactivity.

The researchers described their findings as “preliminary support” for heated hatha yoga as an intervention affecting physiological stress reactivity. (PubMed)

Think about that for a moment.

If trauma begins part of this story through persistent stress-system activation, and the movement intervention potentially influences stress reactivity as well as whole-body mobility, breathing and mechanical tissue loading, we have several mechanisms worth investigating simultaneously.

My Working Hypothesis

Here is the hypothesis I am exploring.

Not a proven mechanism.

Not a diagnosis.

Not medical advice.

A hypothesis.

Trauma and severe chronic stress

↓

Persistent nervous-system protection and muscular guarding

↓

Reduced mobility and altered myofascial mechanics

↓

Less normal compression, expansion and movement of the tissue surrounding lymphatic vessels

↓

Potential reduction in the external mechanical assistance to lymph transport

↓

Reduced clearance of interstitial fluid and inflammatory mediators

↓

A tissue environment that may favor persistent inflammation

↓

Inflammation and fibrosis creating still more tissue stiffness

↓

A self-perpetuating cycle

And then perhaps:

Systematic whole-body movement + muscular contraction + fascial loading + breathing + compression/decompression

↓

Improved mobility and mechanical tissue environment

↓

Better conditions for normal lymphatic transport

↓

Potential reduction in one contributor to chronic inflammation

That final half is exactly what needs to be tested.

So I’m Going to Try Something

My daughter has agreed to participate in my little real-life experiment.

We’re going to work gradually toward the traditional 90-minute Bikram 26+2 practice and document what happens.

Not because I believe Bikram yoga “cures autoimmune disease.”

I don’t.

Not because she’s going to stop carrying an EpiPen.

She absolutely isn’t.

Not because we’re stopping physicians, medications or emergency treatment.

We’re not.

I’m interested in something much simpler.

What happens if we restore movement to an extraordinarily restricted body?

What happens to her flexibility?

Her pain?

Her tolerance for activity?

Her recovery?

Her sleep?

Her perceived inflammation?

Her inflammatory episodes?

And, where medically appropriate, objective measurements?

I want to know.

My coworker can’t join this experiment yet. She’s recovering from cervical fusion surgery, and protecting the fusion and following her surgeon’s postoperative restrictions take priority for as long as necessary.

My daughter, however, doesn’t have that excuse.

As her physical-therapist mother, I apparently have access to a form of therapeutic intervention known as maternal peer pressure.

I’m joking.

Mostly.

Maybe We Have Been Looking at the Body in Too Many Separate Pieces

Medicine understandably divides the body into systems.

Musculoskeletal.

Neurological.

Endocrine.

Immune.

Lymphatic.

Psychological.

But the person experiencing illness doesn’t live in separate systems.

Trauma happens to a nervous system inside a body.

That nervous system influences muscles.

Muscles load fascia.

Fascia surrounds vessels and nerves.

Movement changes tissue pressure.

Tissue pressure influences fluid movement.

The lymphatic system participates in immunity.

Inflammation changes connective tissue.

And connective tissue changes movement.

It’s one body.

Perhaps that’s the most important idea I’ve taken from this investigation so far.

I don’t yet know whether the pathway I’ve proposed will prove correct.

But I have enough evidence to believe the question is worth asking.

And now we are going to test one small part of it.

I’ll write another blog about what happens.

A Note on Safety

Severe food reactions involving throat swelling, breathing difficulty, fainting, widespread hives or other signs of anaphylaxis are medical emergencies. Yoga, stretching, massage or lymphatic techniques are not treatments for anaphylaxis and should never delay epinephrine or emergency medical care.

People with recent spinal fusion or other surgery should follow their surgeon’s and rehabilitation team’s restrictions before beginning yoga. Heated exercise may also be inappropriate for some medical conditions or medications.

The idea discussed in this article is being explored as a complementary movement hypothesis, not as a replacement for medical diagnosis or treatment.

Research Behind This Article

Research on fascial anatomy has found substantial support for several proposed myofascial continuities and evidence that forces can transfer between some connected tissues. (PubMed)

Research on fascial biology has identified contractile myofibroblasts and experimentally demonstrated contractile behavior in fascial tissue, while studies of fibroblast biology show interactions among mechanical stress, TGF-β signaling and connective-tissue contraction. (PubMed)

A recent review of the stress–fascia–pain relationship describes a plausible interaction among autonomic stress physiology, fascial stiffness, impaired tissue gliding, myofibroblast behavior and persistent pain—but this remains an evolving area rather than proof that trauma is literally stored in fascia. (PubMed)

Lymphatic physiology demonstrates that lymph movement relies on both intrinsic contractions of lymphatic vessels and extrinsic mechanical forces created by surrounding tissues. (PubMed)

Established lymphatic dysfunction can produce a cycle involving inflammation, fibrosis and further deterioration of lymphatic function. (PubMed Central (PMC))

Yoga research provides preliminary evidence of favorable changes in inflammatory biomarkers, although overall evidence quality remains limited. (PubMed)

And an eight-week randomized trial of Bikram yoga found reduced cortisol reactivity among women who entered the study with high stress reactivity, providing an intriguing connection between this particular practice and physiological stress regulation. (PubMed)

The unanswered question is whether these separate pieces connect in the way I am proposing.

That’s the question I’m beginning to explore.