About the clinician behind the site

Twenty years of practice.
A different set of questions.

I became a physical therapist because I wanted to help people get better. Somewhere along the way I realized that for a lot of patients, getting better required looking at more than the joint in front of me.

JK
Jesse Krempasky
PT, DPT, Astym Cert.
Outpatient Physical Therapist · Scranton / NEPA

Doctor of Physical Therapy (DPT)20 years outpatient clinical practice
Astym CertifiedInstrument-assisted soft tissue mobilization
Formerly OCS CertifiedBoard-certified orthopaedic clinical specialist; chose not to recertify when functional medicine became the focus
Functional MedicineYears of self-directed study: labs, nutrition, longevity, gut health, performance optimization
Active Hyrox CompetitorPersonally tracks ApoB, HRV, Zone 2 — lives what he writes

How this started

I've been a physical therapist for two decades. For most of that time, I practiced the way I was trained — evaluate the structure, address the impairment, build a program, progress it. And for a lot of patients, that works. The shoulder heals. The back settles. They go home.

But somewhere around year ten, a pattern started to bother me. A certain kind of patient who wasn't getting better the way they should. Motivated, compliant, doing the work — and still stuck. Inflammation that wouldn't settle. Healing that stalled. Pain that was disproportionate to the structural findings on imaging.

I kept asking myself: what am I missing?

The answer, it turned out, wasn't a better manual therapy technique or a more creative exercise prescription. It was everything happening upstream. The inflammatory environment the tissue was trying to heal in. The nervous system state the patient was spending 23 hours a day in. The nutritional building blocks — or lack of them — available for repair. The sleep quality determining whether any of the recovery work was actually sticking.

Standard PT didn't have a framework for any of that. Functional medicine did.

"I didn't leave physical therapy. I went looking for the other half of the picture — and found that the two fit together better than I expected."

The education I gave myself

I want to be clear about something: my functional medicine education has been self-directed. That's not a disclaimer — it's relevant context for how I think about this work.

I didn't attend a weekend seminar and call myself a functional medicine practitioner. I spent years reading the primary literature, following the clinicians doing serious work in this space — Peter Attia, Chris Kresser, the Institute for Functional Medicine — and applying what I was learning in my own life before I ever brought it into my clinical thinking.

I tracked my own labs. I experimented with nutrition protocols. I paid attention to what actually moved the needle and what didn't. The knowledge I have in this area is hard-won, tested personally, and held with the appropriate level of humility about what we know and what we don't.

I also made a deliberate choice around the time I was deepening this work: I let my OCS certification lapse rather than spend the recertification hours on continuing education that felt increasingly disconnected from the questions I was actually asking. That was a trade-off I made with clear eyes. The clinical foundation the OCS represented — orthopaedic examination, differential diagnosis, evidence-based practice — didn't go anywhere. I just stopped paying to have someone else's framework validate it.

What going gluten-free taught me about listening to patients

The most important thing that happened to my clinical practice in the last decade wasn't a course I took or a paper I read. It was removing gluten from my own diet.

I was skeptical. I'll say that upfront. The clinician in me knew the research on non-celiac gluten sensitivity was messy and contested, and I had the usual professional wariness about patients who attributed everything to food. Then I tried it anyway.

The personal turning point

Within weeks of going gluten-free, the bloating I had normalized as just how I felt was gone. The low-grade brain fog I had accepted as a fact of adult life lifted. My recall sharpened. My motivation — not energy exactly, but the drive to engage, to start things, to follow through — came back in a way I hadn't realized was missing. My quality of life improved in ways that were not subtle and not placebo.

That experience changed how I listen to patients. Not because I now tell everyone to go gluten-free — I don't. But because I understood from the inside what it feels like to have a systemic issue that doesn't show up on standard bloodwork, that your doctor won't bring up, that the medical system has no good framework for addressing, and that is quietly degrading your daily function.

A lot of my patients live in that space. They feel it. They mention it in passing and then watch to see if I'll dismiss it. I don't dismiss it anymore.

Gut health, intestinal permeability, systemic inflammation, and their downstream effects on musculoskeletal healing and pain — these aren't fringe topics to me. They're personal. And that makes me a better clinician for the patients navigating the same territory.

Why I built this site

There is no shortage of functional medicine content on the internet. What is genuinely scarce is functional medicine content written by someone who understands movement, loading, tissue physiology, and rehabilitation from twenty years of clinical practice.

Peter Attia is brilliant on longevity science. Andrew Huberman explains neuroscience better than almost anyone. Ben Greenfield covers more biohacking ground than is probably wise. None of them can tell you how to apply any of it with the patient in front of you in the PT clinic on a Tuesday morning — because none of them have done that work.

That's the gap this site is built to fill. Not as a replacement for PT, not as a departure from evidence-based practice, but as the integration of two frameworks that were always meant to work together.

If you're a physical therapist who has had the same nagging feeling I had — that there has to be more to it than this — you're in the right place.

How I think about clinical care

Six principles that shape everything on this site.

01
Ask why, not just what

The diagnosis names the problem. The functional medicine lens asks what upstream dysfunction created the conditions for it. Both questions are necessary.

02
The body is a system

Gut health affects joint inflammation. Sleep affects tissue repair. Nervous system state affects pain perception. Treating in isolation misses the picture.

03
Evidence first, always

I distinguish between what the research supports, what clinical experience suggests, and what is emerging but unproven. I won't flatten that hierarchy to make a cleaner story.

04
Personal experience matters

I track my own labs, run my own experiments, and bring what I learn into this work. A clinician who lives this is a different resource than one who only reads it.

05
Practical over theoretical

Every piece of content here ends with a clinical application. What does this mean for the patient in front of you? That's the question that matters.

06
Honest about complexity

Human biology is complicated. I won't pretend it isn't. Some questions don't have clean answers yet — and saying so is part of doing this work with integrity.

What you'll find here

The Physical Root is a subscription library built for physical therapists and movement-based clinicians who want to integrate functional medicine thinking into their practice. Clinical protocols, lab interpretation guides, patient education resources, nutrition frameworks, and case studies — organized around the systems that actually determine whether your patients heal.

There's also a Performance & Longevity pillar for clinicians who want to go deeper on the optimization and longevity science — Zone 2, VO₂ max, HRV, NAD+, peptides — with the clinical movement lens that Attia, Huberman, and Greenfield can't provide.

New content is added monthly. Everything is written by me, from clinical practice, with real patients in mind.

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Start with the methodology

Want to understand the full framework before diving into the library? The methodology page lays out how functional medicine and physical therapy fit together.

Read the methodology Browse free articles →