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ABOUT US
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The Founder
Built by Someone Who Failed the Same Way
I spent a decade as CEO of a robotics company - scaling it from startup to 270 people, raising institutional capital, building systems that operated autonomously in conditions that would kill a human. But I couldn't build a system for my own body.
I gained and lost the same weight four times over fifteen years. I had gym experience, PT certifications, deep research into nutrition. I knew what to do. Knowing wasn't the problem - sustaining was.
At 51, I finally figured it out. Not by lifting harder, but by treating my body like the complex system it is - starting with biology, building stable infrastructure, automating decisions wherever possible. I've maintained a cut while flying internationally. Reset jet lag in hours. Stayed inside the corridor through work chaos and family demands.
Default Fit exists because I needed it first. Now I teach it to men navigating the same terrain.
- Brian Allen, Founder
THE PROBLEM WE SOLVE
Most Men Don’t Fail at Getting Fit.
They Fail at Staying Fit.
The fitness industry is built around short-term transformations. Twelve-week programs, dramatic before-and-afters, and intense routines designed to produce fast results.
And they work — temporarily.
Then work intensifies. Travel resumes. Stress accumulates. The structure that supported the transformation collapses. Six months later, you’re starting again, often carrying frustration and self-doubt that wasn’t there before.
The FAILURE Happens
After the Transformation
Most fitness failures don’t happen at the beginning. They happen after progress has already been made.
The industry obsesses over getting you to a finish line — but there is no finish line. No one teaches what comes after. No one builds systems for maintenance, disruption, or long-term reality.
Default Fit was built around this gap. Not to help you get fit once, but to ensure you never fall far enough to need a rebuild again.
Fitness Infrastructure
for Capable Men
Default Fit is not a transformation program.
It is fitness infrastructure — a system designed to be built once and maintained indefinitely.
We teach fitness autonomy: the ability to regulate your own body composition, understand the levers that matter, and keep results without relying on peak motivation, perfect conditions, or constant supervision.
The goal is not dependency on a coach, an app, or a program. The goal is ownership. Fitness that runs in the background of your life instead of competing with it.
THE SYSTEM
The Default Fit Approach
Most fitness advice asks you to make the right decision over and over, every day, forever. That's exhausting - and eventually, it fails.
Systems Over Willpower
If a decision repeats, it gets designed out. Meals are pre-decided. Lifting happens at fixed times. The system runs whether you're motivated or not.
Enough, Not Maximum
We define a clear target - enough leanness, enough muscle, enough health. Once you're there, the game changes from pursuit to maintenance.
Built to Survive
Travel, stress, parenting, work surges - your system has to survive real life, not collapse the moment conditions aren't perfect.
This isn't about perfection. It's about building something robust enough to handle imperfection - and getting back on track without drama when life inevitably disrupts it.
What Biology Optimisation Looks Like
Sustainable fitness starts with biology, not willpower. When your inputs are aligned, consistency becomes automatic.
Sleep Architecture
Not just hours - quality, timing, and consistency. Poor sleep tanks testosterone and
spikes cortisol faster than almost anything else.
Stress Regulation
Chronic stress keeps cortisol elevated, blocking fat loss and muscle growth. We build systems that manage stress load, not just ignore it.
Sunlight & Circadian Rhythm
Light exposure governs hormone production. Most men are chronically underexposed to morning light and overexposed to screens at night.
Alcohol Rules
Not elimination - operating rules. Understanding the real cost and building sustainable guardrails.
5,000
Happy Customers
4,560
Perfect Bodies
570
Working Hours
900
Success Stories
RESULTS
Sustainable Success Stories
Default Fit cut through years of confusion for me. No hype, no nonsense, just a system that actually works in real life. The structure around training, food, and habits made consistency automatic. I’m stronger, leaner, and far more confident than I’ve been in years.
Gabby Smith
Customer
This wasn’t another ‘all-or-nothing’ fitness plan. Default Fit helped me build something sustainable around work, family, and travel. I finally feel in control of my body again without obsessing over every detail.
Floyd Weather
Customer
What surprised me most wasn’t just the physical change it was the mindset shift. Default Fit helped me rebuild confidence and discipline in a way that spilled into every area of life. It feels like a reset, not a temporary fix.
James Dee
Customer
ABOUT US
Far far away, behind the word mountains, far from the countries Vokalia and Consonantia, there live the blind texts.
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203 Fake St. Mountain View, San Francisco, California, USA
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