Evidence-Based Coaching

Stronger. Smarter.
For Life.

Name: PTFit
Price range: $$

You don't need another cookie-cutter program. You need a coach who understands anatomy, biomechanics, and progressive overload — and builds your training around your body.

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Zach Ermert — Doctor of Physical Therapy candidate

Coached in the PTFit appPrograms, check-ins, nutrition and messaging — one private place.

Ready to Work Together?

Book a free 15-minute phone consultation. We will talk through your goals and your training history, and whether 1:1 coaching built around your body is the right fit — no obligation.

Book a Consultation

100+

Clients Coached

15%

Mortality Risk Reduction from Resistance Training

50%

Lower Re-Injury Rate with PT-Guided Training

4.9★

Average Client Rating

Zach Ermert, bearded and shirtless, pulling a cable-machine handle in a gym and looking toward the camera.

Meet Your Coach

The Bridge Between Rehab and Performance

I spent years watching the same pattern: clients would finish physical therapy, get cleared to return to training, and immediately re-injure themselves. The gap between "rehabbed" and "strong" was enormous — and nobody was bridging it.

That's why I built PTFit. I combine clinical physical therapy knowledge with evidence-based strength programming to help people train hard, train smart, and stay in the game for decades.

Read the full story

Muscle loss begins at 30. Most people are never told. We are changing that.

Who we help

Coaching built for where you actually are

Starting out

The 30-year-old who never trained consistently

A foundation of compound lifts, reversing desk-bound posture before age-related decline begins.

Coming back

The 45-year-old returning from injury

Scared to lift heavy again? We rebuild tissue capacity methodically, with a DPT candidate watching every progression.

Staying independent

The 55-year-old who wants 30 more strong years

Bone density, balance, and the strength to get off the floor, carry groceries, and pick up grandkids.

Performing

The athlete who wants to train smarter

Load management, bulletproof joints, and injury prevention before it happens — not after.

What I Offer

Services Built for Results

How coaching works

1:1 Online Coaching

Flagship Program

Fully customized training and nutrition programming with weekly check-ins, video form reviews, and direct access to Zach. Built around your goals, your schedule, and your body.

It starts with a free 15-minute phone consultation.

Start with a consultation

The process

What happens when you work with me

STEP 1

Book a consultation

A free 15-minute phone call about your goals, history and training.

STEP 2

Get your invitation

If we're a fit, you receive an invite to the private PTFit app.

STEP 3

Custom program

Built around your goals, history and equipment. Versioned, never auto-changed.

STEP 4

Weekly check-ins

Form reviews, messaging and program adjustments, all in the app.

STEP 5

Nutrition tracked

Meal plans, daily logging and macro targets alongside your training.

The Science

Training Backed by Research, Not Bro-Science

Every protocol is rooted in peer-reviewed clinical data. Each stat below links to its source and PMID.

All references

15%

Resistance training is associated with a 15% reduction in all-cause mortality, independent of aerobic exercise.

PMID 35228201

10–15%

Systematic progressive overload produces 10-15% strength gains in 8-12 weeks, even in trained individuals with over 2 years of lifting experience.

PMID 28834797

50%

Physical therapy combined with progressive strength training reduces re-injury rates by approximately 50% compared to rehabilitation alone.

PMID 27162233

Real Results

What Clients Are Saying

He’s the real deal

“I started working with Zach over the summer of 2025 and went with him because I didn’t feel like I was being ‘sold’ into things. Every other account was an influencer trying to shame me into buying their services because if I didn’t, I didn’t take my health and wellness seriously. His approach to health and wellness isn’t for trends—it’s a science-based approach. Since he’s a PT, I felt more confident in trusting him to guide me on my eating and training journey. I had a shoulder replacement surgery 6 months prior to working with Zach, and he made sure that each and every workout was structured in a way that wouldn’t cause harm, but increase strength. I learned so much about food and training and about my body. His program works because he kept it simple—not showy. He’s the real deal.”

CLCharlie L.Coaching client

A real step up from a previous online trainer

“Working with Zach has been a great experience. His communication style is genuinely motivating — a real step up from a previous online trainer I’d worked with. Even after years of working out in different ways, Zach taught me new approaches and helped me understand my own body better. His program’s weekly check-ins and daily calorie tracking kept me accountable throughout. Most importantly, I got real results: I’ve lost weight, my clothes fit better, I can see the difference in the mirror, and I’ve increased the weight on most of my exercises. Highly recommend.”

ABAndrew B.Coaching client

He doesn’t sell fluff, he educates

“Zach brings a lot of personal experience and knowledge to the table. He doesn’t sell fluff, he educates. His training is evidence-based, he teaches form and mechanics, and on top of that, he’s also just a really genuine guy.”

DBDavid B.Coaching client

Individual results vary.

Read all 8 client stories

FAQ

Common Questions

Something else? Send a message.

What makes your coaching different from a regular personal trainer?

I am a Doctor of Physical Therapy (DPT) and Certified Strength and Conditioning Specialist (CSCS). This means I can assess movement quality through a clinical lens, program around injuries and limitations, and bridge the gap between rehabilitation and high-performance training. Most personal trainers do not have the clinical background to do this safely.

Do I need to have lifting experience to start?

Not at all. I work with clients at every level, from absolute beginners who have never touched a barbell to competitive powerlifters. Your program is built entirely around your current abilities, goals, and any physical limitations. We start where you are and progress methodically.

How does online coaching work?

After your initial consultation, I build a fully customized training program delivered through the PTFit app. You get weekly check-ins, video form reviews, nutrition tracking, and direct messaging access to me. I adjust your program in real time based on your progress, recovery, and feedback. It is like having a coach in your pocket.

What if I have an existing injury?

This is where working with a DPT gives you a significant advantage. I can evaluate your injury history, understand your movement limitations, and program training that works around — and eventually through — your issues. Many of my clients came to me specifically because they were told they "could not" lift anymore. We find a way.

Email updates

Training notes, straight to your inbox

Evidence-based training notes, sent when there is something worth reading. Subscribers also get my free PDF guides by email.

Get Started

Build Strength That Lasts a Lifetime.

Stop guessing. Start training with a Doctor of Physical Therapy who builds programs around your body, your goals, and the latest research.

Ready to Train Smarter?

Book a free initial consultation. We'll review your goals, assess your training history, and map out a plan to get you where you want to be — no obligation.

Apply For Coaching How Coaching Works

Medical disclaimer: Online coaching services are not physical therapy or medical advice. Consult your physician before starting any exercise program.

Stronger. Smarter.For Life.