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You can’t reach a destination if you don’t know your true coordinates. Most fitness journeys fail because they start with a guess, leading to injury or burnout.
We begin with the proof360 Assessment. Using clinical-grade InBody scans, computer vision movement assessments and Proteus motion strength & power tech, we pull the curtain back on your metabolic health, muscle and body composition, and power.
You gain the peace of mind that comes from finally knowing exactly what your body needs to thrive, not just survive.
You are an N-of-1. Your history, your injuries, and your goals are unique, so your training must reflect that, even in a small group environment. Following a generic plan is the fastest way to plateau.
We use your data to build your personal protocol. Whether you’re stepping into a 30/30 session or a Base40 class, your coach knows exactly how to adjust the load and intensity for you.
It’s the high-touch feel of personal training within the high-energy environment of our Salt River community.
To protect your health for the long haul, you need a heart that is as resilient as your muscles. You shouldn't have to choose between building strength and building endurance.
Our signature 30/30 session is the gold standard for longevity—30 minutes of "LIFT" for muscle mass growth and preservation followed by 30 minutes of "BREATHE" for VO₂ max and heart health. For those looking to master the fundamentals of functional movement, endurance, and recovery, our Base40 provides a focused, high-intensity strength foundation.
Both are data-informed and coach-led to ensure every minute you spend in the gym is an investment, not a cost.
The body you have today won't be the body you have in 90 days. If your program doesn't evolve, your progress will stall. You deserve to see the "proof" of your hard work.
You'll run ongong full reassessments to confirm your progress. We look for the tangible wins: the muscle gained, the visceral fat lost, and the power restored.
This cycle of "Measure, Train, Reassess" ensures you are constantly moving toward the best version of yourself, backed by the data to prove you’ve arrived.
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Take a sneak peak at what it’s like inside of our gym. Hear directly from a few clients that we’ve worked with & understand why they chose to get started & more importantly, why they chose to stick around.
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We know that small group training leads to better results for our members, we know that personalized coaching and relationships lead to better results for our members, and we also know that smart technology in the right environment leads to better results for our members...
....and we'll never be finished refining how we help them.
Real coaching, real relationships. Not just workouts.
Small group training that drives accountability and consistency.
We measure what matters so you always know your progress.
Training designed to help you move, feel, and perform better for life.
At proof3, our focus is simple: results. Our flagship 30/30 class combines 30 minutes of progressive strength training with 30 minutes of focused endurance training in a community-driven small group environment. Our expert coaches deliver personalized feedback to you in every class as well as when you need it out of the gym. proof3 is the perfect place to reach your goals.
There are two (2) ways to initially experience proof3:
We offer a proof30 Experience to get you results in 30 days or your money back. From there, we offer monthly and annual membership options covering group classes, personalized coaching, and assessment tools.
Our systems integrate body composition data, computer vision AI movement metrics, and world-class patented strength testing hardware to keep your training optimized.
Group fitness is typically one-size-fits-all. At proof3, even group sessions are personalized using your assessment results and how you're showing up on a particular day.
