Longevity Isn't Luck.
It's Lifestyle, and It Starts Here

Find Your prf score™

At proof3, we’re not about shortcuts, fads, or quick fixes. We’re focused on real progress and helping you build the strength, energy, and habits that support a healthier, more resilient life. Longevity is the goal, and consistency is how we get there.
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The proof360® assessment is where your wellness journey begins. In just 60 minutes, we evaluate four essential pillars of your health using advanced tools and science-backed methods to give you a clear picture of where you are today.

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Body Composition
Body fat, muscle mass, ++

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Strength
3D resistance test

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Movement
How well you move

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Wearables Data
Daily habits outside the gym

Book Your Assessment
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Your wellness journey begins with a single number.

Using the data from your proof360 assessment, our proprietary algorithm calculates your prf score™ (Performance Readiness Factor), a single, trackable number that serves as your personalized longevity baseline.

Once your prf score is established, our AI-powered system builds a tailored program aligned to your fitness and wellness goals, lifestyle, and performance level.

You’ll review your plan one-on-one with a dedicated coach, so you’re never navigating your health alone.

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Group Training Made Personal

Should you join proof3, your small-group training sessions are guided by your coach and shaped by your personal data. Every session blends strength, mobility, endurance, and functional fitness, the four pillars of sustained wellness, both in and out of the gym.

Need nutrition coaching or extra support? We've got you covered. Our goal is to help you make real, measurable progress and maintain it for the long term.

At proof3, we’re redefining what it means to work out with precision, personalization, and a community focused on helping you live stronger, for longer
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Customer Success

Hear what our clients say about us...

proof3 salt river member, Janice, doing barbell deadlifts in the proof3 salt river gym
I feel amazing about my progress at proof3. I work and have two children, so my time matters a lot to me, and knowing my coaches and program are outstanding is important. And, I LOVE training with the people at proof3. It's become a joy to be there!

Janice

proof3 salt river member, Brett, smiling while he does a landmine squat in the proof3 salt river gym
proof3 is a great environment to workout and get healthier! I struggled for years to getting to the gym regularly, but proof3 has me motivated to return as many times a week as I can. In just a few months, I'm feeling better than I ever have, and I'm 50!

Brett

proof3 salt river member, Maggie, doing dumbbell incline bench press in proof3 salt river's gym
I wasn't even looking for a new gym, but when I tried proof3's assessment and then their classes, I fell in love right away. I have a 9 month old baby girl, and knowing that I am building strength and longevity brings me a lot of peace. You'll love it there!

Maggie

proof3 member, Elena, laying on the ground smiling hugely
I've done plenty of fitness before, from CrossFit to training with a program on my own, but when I walked into proof3 I knew instantly that it was different. The coaches are fantastic, the classes are challenging but fun, and the technology is super cool!

Elena

A proof3 member, Jarryd, smiling big in the proof3 salt river gym with proof3 coach, Carl, standing in the background
I am a practicing chiropractor, and many fitness gyms ask me to try their gyms out, but I was blown away by proof3's assessment and coaching philosophy. I will be recommending proof3 to my patients for sure

Jarryd

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Ready to See What's Possible?

The best version of you isn’t out of reach. It starts now.

This isn’t a quick fix or a one-size-fits-all program. It’s the foundation of a personalized roadmap built around your real life, powered by smart technology, guided by expert coaching, and supported by a connected community.
Book Your proof360 Assessment