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About Tyler Greer · Master CHEK Practitioner

The body keeps the answers.
My job is to read them.

I'm Tyler Greer, a Master CHEK Practitioner and root-cause health coach in Renton, WA, with 20+ years of clinical experience. I work with people who've been told their labs are "normal" but know something is off, and with anyone who wants to be genuinely healthier rather than just leaner. I investigate the drivers of chronic pain, fatigue, and dysfunction that conventional training, physio, and medicine consistently miss. Then I build a fully personalized plan to fix them.

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In-person (Renton, WA) · Online worldwide · No commitment required

Master CHEK Practitioner FDN Certification in Progress
20+ Years Experience

My story

Why I work at the root, not the symptom.

The short version

Started asA personal trainer, then went deeper
The turning pointLived through digestive issues, mercury toxicity, and fungal overgrowth conventional fitness couldn't touch
The frameworksCHEK methodology + functional diagnostic principles
TodayPrivate studio in Renton, WA · online worldwide via FaceTime & Zoom

I started where most people in this industry start: as a personal trainer. What pulled me toward deeper work was watching the fitness world chase aesthetics while people kept getting sicker. The CHEK Institute system reframed everything for me: holistic health, integrated body systems, the right way to actually build a healthy human instead of just leaning someone out.

It got personal. I grew up overweight with bad acne and a diet of sugar and processed food. The shift started with one moment in high school: water-concentrated fruit during football hell week, and the way I felt afterward. That cracked open everything. I dropped 55 pounds that summer, gained 20+ pounds of muscle the next year, and thought I'd figured it out.

I hadn't. The transformation looked good on the outside, but I was still living on poor habits, and it caught up with me. Digestive issues, mercury toxicity, fungal overgrowth: problems conventional fitness has no answer for. CHEK and functional diagnostic nutrition became the frameworks that pulled me out, and they're the same frameworks I use with every client now. Paul Chek's work is the lens; functional lab work is how we see what's actually happening underneath.

Today I work with clients at my private studio in Renton, WA and via FaceTime or Zoom worldwide. My favorite people to work with are the ones who genuinely want to be healthier, not just look better. Looking good is a side effect of doing the deep work. I'm married to my wife Katie, we're raising our son Kingston, and I train in the same Renton studio my clients do. I live what I teach, with the same human imperfections everyone has. Always learning, always progressing. I expect the same from the people I work with.

Credentials & training

Trained to find what most programs never look for.

The Master CHEK Practitioner credential is the most advanced level of certification in the CHEK Institute system, a multi-year path that goes far beyond a standard personal-training certificate into assessment, corrective exercise, holistic nutrition, and lifestyle medicine. It's the lens behind everything I do, layered on top of two decades of hands-on work with real clients.

Master CHEK Practitioner

The most advanced certification level in the CHEK Institute methodology. It treats posture, movement, nutrition, and lifestyle as one system.

FDN: In Progress

Functional Diagnostic Nutrition certification in progress, adding functional lab interpretation to the assessment toolkit.

20+ Years Experience

Two decades of in-person and online coaching, including long-term clients who've trained with me for five, six, and more years.

ACSM Exercise Physiologist

Certified Exercise Physiologist through the American College of Sports Medicine.

NASM Certified Nutritionist

Nutrition certification through the National Academy of Sports Medicine.

Corrective Exercise & B.S. Exercise Science

Corrective Exercise Specialist credential plus a Bachelor of Science in Exercise Science.

How I work

Assessment, not assumption.

Every plan I build starts with data, not guesswork. I use the CHEK "4 Doctors" framework to look at your whole life as one integrated system, because chronic pain, fatigue, and stalled progress almost never come from a single cause. We measure where you actually are, then build from there.

Dr. Quiet

Stress, sleep, and recovery: the reserves everything else depends on.

Dr. Diet

Nutrition and hydration matched to you, not a one-size-fits-all template.

Dr. Movement

Posture, mobility, and the primal patterns your body is built to perform.

Dr. Happiness

Purpose, mindset, and the lifestyle factors that make change actually stick.

Who I work with

A partner in movement & rehab.

I don't believe any one coach has every answer. For the dedicated movement and strength side of a client's program, I partner with my wife, movement coach Katie Milne. Her dance-inspired strength training, Pilates, and corrective movement work runs through our sister studio, Shape & Strength Fitness. Where I investigate what's broken, Katie restores what's possible.

It's the same principle I apply to my whole practice: surround you with the right expertise, refer when something is outside my scope, and keep your plan coherent rather than fragmented across people who never talk to each other.

Who I help

Built for people who've tried everything.

Busy professionals running on empty, with energy crashes and burnout no one can explain
People with chronic, recurring pain that stretching, adjustments, and physio haven't resolved
Anyone told "your labs are normal" who knows something is still off
Clients who want to be genuinely healthier, not just lean out for a season
Online clients worldwide who want clinical depth, not just another workout plan

Ready to find answers?

Stop guessing. Start measuring.

Take the free root-cause self-assessment to see what's likely driving your symptoms, or book a free discovery call and we'll talk through your situation, no obligation.