One Complete Picture of Your HealthPrecision Personal Training Engineered For Your Biomarkers, Your Calendar And Your Life.
One-on-one personal training in Santa Monica and surrounding areas.
Your ONE PT health framework: comprehensively built, simply delivered
01
Body composition and biomarkers
Most fitness programs start with an arbitrary routine and hope your body adapts. We reverse-engineer the process. Pairing clinical blood biomarkers with body composition analytics gives us a baseline map of your metabolic health, hormonal profile and recovery capacity.
02
Training optimization
Individualized resistance programming built around your movement profile, injury history, body composition, biological age and performance goals.
03
Nutrition strategy
A nutrition plan that supports your body composition and your metabolic markers.
04
Clinical supplementation
We eliminate random supplement stacks. Every recommendation is chosen to address specific biomarker deficiencies, optimize performance and accelerate recovery.
05
Lifestyle architecture
The most perfect plan is useless if it collapses under the weight of your calendar. We map your protocol into your lifestyle, building adaptable routines for travel, client dinners and high-stress weeks so your progress never stalls.
The Proof
The journey so far
Sui Min
I’ve been training with Gavin at One PT for almost a year and a half, and the experience has been nothing short of life-changing.
After years of trying every diet, app, and fitness program under the sun — MyFitnessPal, Noom, intermittent fasting, even working with dietitians — I was frustrated and stuck. What Gavin offered was different: a holistic, personalized approach to weight loss, fitness, and overall health.
He built a plan tailored specifically to me and now I’m down 25 lbs and have gone from 28% body fat to 16%. Beyond the numbers, I feel stronger, my endurance has improved dramatically, and I’m more confident in my body than I’ve been in years.
The process isn’t magic — it takes commitment and hard work — but with Gavin’s support and the One PT team behind you, it’s completely doable. They don’t just train you when you’re in the gym. Gavin checked in regularly when I traveled (even internationally), kept me accountable, and helped me stay on track. Every two weeks, we’d review progress with measurements, photos, and any needed adjustments to workouts or nutrition.
Gavin is an elite-level trainer — incredibly knowledgeable, focused on form, and committed to your results. He knows when to push, when to scale back, and never lets you just “go through the motions.” Every session is strategic, targeted, and efficient.
If you’re on the fence: do it. Gavin’s no-BS, full-support approach is the real deal. At One PT, they truly care about your success — and if you commit, the returns are absolutely life-changing.
A trusted partner in your health journey, not just a gym
01
Appointment based
1v1 appointment based sessions. Your time is never interrupted.
02
Fully attentive
From every rep on the gym floor to every decision outside of it, your coach is fully present, deeply invested, and relentlessly focused on your health goals.
03
Data driven
Strength metrics, body composition, sleep and recovery all tracked and analyzed every session.
04
Premium hospitality
A team that treats your time with the same respect you give it.
Meet the team
Gavin, Founder and Trainer
Certified Personal Trainer and Strength & Conditioning Coach with nearly a decade of experience. Gavin has worked across the full performance spectrum, from NCAA Division 1 athletes to elite professionals in the NFL, NBA, MLB and NHL, to high-performing business executives all over the world.
Mark, Co-owner and Trainer
Originally from Aberdeenshire, Scotland, Mark's discipline was forged in service with the British Army's elite Parachute Regiment. Since 2018 he has specialized in strength development, lifestyle integration and long-term sustainability, blending military precision with a human-first coaching approach.
Gerard, Trainer
While studying for his bachelors in Exercise Science, Gerard worked in the Exercise Clinic at Iowa State, doing 1-on-1 training with retired professors and doctors. In 2022 he shifted his focus back to 1-on-1 training. His primary goal is to help people gain confidence in weight lifting and build sustainable eating habits.
Allison, Trainer
Allison is a former college athlete and personal trainer who believes fitness goes beyond workouts. She understands firsthand what it takes to build strength and healthy habits over time, and helps clients create sustainable routines that fit their lifestyle.
Gavin 
Mark 
Gerard 
Allison
FAQ's about Personal Training with ONE PT
Book Your Assessment
Take the first step toward optimized health and performance. Tell us where you are and we will be in touch to design your personalized assessment.
Location1919 Broadway, Santa Monica, CA 90404Phone(310) 625-8968HoursBy appointment only