N of 1 Fitness | Dr. Bailey Devine — Doctoral-Level, Individualized Coaching
Dr. Bailey Devine · N of 1 Fitness

Every client is
a study of one.

One human. One dataset. One program.

Doctoral-level, individualized coaching built around you — not the average client. Available remotely, in-person in Mid-Cities DFW, or as a hybrid of both.

Dr. Bailey Devine, PhD, BCBA-D
PhD BCBA-D ASFA CPT
N=1 You are
the study
Doctoral-Level Science Behind Every Program
Behavior-Based Coaching That Actually Sticks
Built Around You — Not the Average Client
Three Formats · Same Method
100% Individualized
Dr. Bailey Devine training
Dr. Bailey Devine
PhD · Experimental Psychology
BCBA-D · LBA · CPT (ASFA)

The problem isn't you.
It's the system.

I know what it feels like to not see yourself reflected in traditional fitness spaces or programs. Too often, they're built around narrow assumptions about what success is supposed to look like, and who it's supposed to be easy for.

"The problem wasn't me. The problem was the system."

Now I coach differently. With 20+ years of clinical experience helping people change and maintain behavior — and doctoral-level training in Experimental Psychology and Behavior Analysis — I bring a level of scientific rigor to fitness coaching that traditional programs don't offer.

The N of 1 Method is what came out of that — a methodology built around the individual, delivered in whichever format fits your life.

Behavior science
applied to fitness.

Most fitness coaching ignores the most important variable: you.

Your preferences, your patterns, your environment, your history — everything that shapes what will actually work for you.

With a PhD in Experimental Psychology and doctoral-level Board Certification in Behavior Analysis, I bring a research-grade understanding of human behavior to every program I build.

N=1
The Research Standard

In clinical research, N-of-1 designs treat each participant as their own control — testing what works for the individual, not the average.

PhD
Experimental Psychology

Doctoral-level research training in human behavior, learning, and performance.

BCBA-D
Board Certified · Doctoral

The highest level of certification in Applied Behavior Analysis — the science of understanding and shaping behavior.

Three ways to
be an N of 1.

Whether you're across the country or down the road, there's a way to work with me that fits your life. Each format delivers the same individualized methodology — choose the one that fits your situation.

Remote

Remote Coaching

Fully Online · App-Delivered
Available anywhere

Custom monthly programming built entirely around you. Structure and adaptability, without needing to be in the same room.

Best for People who want individualized coaching delivered through an app, with weekly check-ins and async messaging.
Explore Remote →
In-Person

In-Person Coaching

Fully Coached · Every Session
Mid-Cities DFW · or travel in

Hands-on coaching with Dr. Bailey locally in Mid-Cities DFW. Train 2 to 7 times per week, every session led in person.

Best for People who want every session expert-led, with real-time correction and the accountability of a standing appointment.
Explore In-Person →
Hybrid

Hybrid Coaching

In-Person + Programming
Mid-Cities DFW · or travel in

One in-person session per week, plus a custom program for two more training days you complete on your own.

Best for People who want a coached anchor session each week, plus expert-designed programming to follow on their own.
Explore Hybrid →

Not ready to commit yet? Start here — it's free

The "I Don't Feel Like It" System

Stay consistent even on low-motivation days. A simple, flexible system you can use right away — no strings, no signup pressure.

Get the Free System →

You probably have
a few questions.

Which format is right for me?

If you're outside DFW, Remote is your option. If you're local and want every session coached, In-Person fits. If you're local and want a mix of coached sessions plus independent training, Hybrid is built for that. Each format page has more detail to help you decide.

Can I switch formats later?

Yes. Your situation might change — you might move, your schedule might shift, your goals might evolve. The methodology stays the same; the delivery can change with you.

What if I'm not sure which to pick?

Start with the format that best matches your geography and how hands-on you want the coaching to be. If you're still unsure after reading the format pages, reach out and we'll figure it out together.

What makes the N of 1 Method different?

Most fitness coaching applies the same framework to everyone. The N of 1 Method treats each client as their own study — programming designed around your specific body, history, environment, and goals, using doctoral-level behavior-science principles to make it actually stick.

How long until I see results?

Honestly, it depends on your starting point, your goals, and your consistency — which is exactly why every program is built around you, not the average client. Most people feel meaningful changes in how they move and recover within a few weeks; visible strength and body composition changes follow as the work compounds. The goal isn't a 6-week transformation — it's a system that keeps producing results because it actually fits your life.

Do I need to already be in shape or know what I'm doing?

No. Every format is structured around your current starting point. You'll always have clear guidance, modifications, and support based on your experience level.

N OF 1 FITNESS you are the study

Ready to become
your own study?

you are the study

One coach. One client. One program built entirely around you. Pick the format that fits your life.