Group Fitness & Personalized Training in Scottsdale

Results That Go Beyond the Workout

Transform your physique and your future by combining elite strength training with the lifestyle, nutrition, and recovery habits needed to stay lean and strong for life.

Functional Strength & Muscle Longevity

Build a powerful physical foundation that fights sarcopenia and preserves independence by using data-driven loading to ensure you’re gaining—not just maintaining—muscle mass at every age.

Metabolic Health & Precision Fat Loss

Strip away stubborn body fat and dangerous visceral stores through strategic conditioning that prioritizes your hormonal health and internal resilience over mindless calorie burning.

Movement Prowess & Structural Balance

Move with total confidence and zero restriction by mastering "movement prowess," where we combine mobility work with targeted strength to erase imbalances and keep your joints bulletproof.

Aerobic Capacity & Heart Resilience

Earn a "ready-for-anything" endurance engine through optimized aerobic training that strengthens your heart and speeds up recovery, ensuring your energy levels last long after you leave the gym.

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How Do I Get Results?

STEP 1

Complete Your Assessment & Personal Training Sessions

Take the proof360 assessment and review your personalized prf score with your coach.

Then enjoy a personal training session to build real confidence.

You’ll leave with a clear, data-backed starting point for your fitness and wellness journey.

STEP 2

Train, Build Habits & Prove Success In 30 Days

Join weekly small-group classes where you'll learn how to train and build momentum.

Receive & implement your personalized lifestyle and nutrition strtategy.

The result of your efforts will be tangible improvements in your proof360 Assessment in only 30 days.

STEP 3

Compound Your Early Progress With Lasting Results

Enjoy ongoing assessment check-ins to ensure your contiunued prf Score progress.

We'll adjust your plan to stay aligned with your current and long-term goals.

No matter what life throws at you, we’re here to help keep you on track andenjoy the process.

Clarity Drives Progress

In today’s data-overload world, you don't need more numbers, you need a plan. That’s where proof3 is different. We take this information, distill it down with you, and you walk away .

MOVEMENT

Computer Vision Assessment

Mobility, flexibility, and joint stability are critical to long-term performance and injury prevention. Our quick computer vision assessment quantifies how you move, so we know where to focus to keep you strong, fluid, and pain-free.

Coach performing assessment at proof3 gym

HABITS

Wearable & Health Data

Your daily habits outside the gym matter just as much as what you do inside. For those who want, we connect to your wearable(s), track your recovery, and give you actionable insight into what’s working and what’s not.

Tablet displaying movement analysis for fitness assessment at proof3 gym

BODY

InBody Scan

By utilizing gold-standard InBody technology to track everything from visceral fat to cellular health, we provide the deep-tissue data you need to precision-engineer your body composition and long-term vitality.

InBody body composition scanner used to measure health and fitness metrics

STRENGTH

Proteus Test

Strength is a leading predictor of healthspan. Our Proteus test doesn’t just guess; it gives you a Power Age Score that shows how much force you generate and where you need to build. Then we help you train the right muscles, the right way.

More about Assessments

Customer Success

Hear what our clients say about us...

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 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

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

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

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

proof3 Salt River Team

Jim Crowell, coach and founder of proof3 gym

Jim Crowell - Coach, Founder, Growth

Married & dog lover, CEO, global coaching educator, 5-time gym owner, lifetime coach, Penn State Tennis, CrossFit Games Athlete. Jim's got a world-class coaching eye and ability to connect the dots with people.

Jon Elms - Head Coach

Husband, father, weightlifter, esports athlete, wellness beverage owner, and nationally ranked West Coast Swing Dancer. If you need somebody with as much education as entertainment, Jon's your guy.

Mindy Swisher - Studio Manager

3 fast-growing kids, 20 years in Fitness & Wellness, gifted connector and strategist, and dedicated to total wellness and happiness. Mindy's both the energizer as well as the organizer and an invaluable asset on both the coaching and operations-side of proof3.

Elizabeth Giordano, coach and researcher at proof3 gym

Elizabeth Giordano - Coach, Researcher

Passionate researcher in physiology, concussions, and weight loss particularly for underserved populations. Elizabeth has a deep history in fitness coaching and horseback riding, and she's a gifted engager of people.

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Common Questions

Some of the common things people ask about proof3®

What is proof3®, and how is it different from other gyms?

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.

What can I expect from my first visit to proof3?

There are two (2) ways to initially experience proof3:

proof360 Assessment: Gain insight via body scans, movement assessment, and wearable data.
proof 30/30 session: Our signature 60 min session (30m Lift / 30m Breathe).

What are the membership options and pricing?

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. It includes access to all group classes, personalized coaching, and assessment tools.

What kind of technology does proof3 use to track my progress?

Our systems integrate body composition data, movement metrics via computer vision, and wearable data aggregation. Your coach receives all the insights in real-time to keep your training optimized.

What’s the difference between group training and group fitness?

Group fitness is typically one-size-fits-all. At proof3, even group sessions are personalized using your assessment results and how you’re feeling on a particular day.

Live Stronger For Longer^®

Fun and Supportive Small Group Classes That Drive Consistency & Community.

Personalized Coaching That Ensures Proper Movement And Progression In And Out Of The Gym.

Smart Technology That Proves Results, Delivers Insights, And Supports Accountability.