9714 N 7th St, Phoenix, Arizona 85020
Get in touch now 623-294-7090

Phoenix's Top Personal Training Studio

At Underground Fitness, We Help You Stop the Struggle And Lose Weight Permanently

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Personal Training near Phoenix

Personal Training

Our Personal Training program is helping men and women all across our community thrive. We're giving you the chance to take on customized fitness strategies, sustainable nutrition and lifestyle habits, and hands-on coaching every step of the way.

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Personal Training near Central/North Phoenix

Nutrition Coaching

Take on the best Nutrition Coaching in Phoenix. We're customizing every aspect of this system to help you see real results and sustain them like never before. And we include nutrition coaching with your Personal Training program! Learn more today.

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Personal Training near Central/North Phoenix

Fit Over 40

Underground Fitness' Fit Over 40 Program can help you enjoy improved strength and mobility across all aspects of your life. Underground Fitness is proud to work with men and women of all fitness levels and we can't wait for you to be next! Come sign up in Phoenix today.

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Personal Training near Central/North Phoenix

The 63 Day Transformation

Keep your heart racing and your muscles moving from start to finish with our 63 Day Transformation Bootcamp Classes in Phoenix. Get in the best shape of your life by losing weight the right way and keep it off forever!

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metabolic and testing near phoenix

Metabolic Assessment and Testing

Our Metabolic Assessment program can help you better understand your body and better identify the training strategies you need to achieve long-lasting success. These tests are the perfect way for athletes of all abilities to thrive.

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Testimonials


Underground Fitness Google five star review - Carl Newsome

Carl Newsome

I, like most overweight people, have tried EVERY DIET imaginable with very little success. After years of battles and struggling, my weight reached my all-time high of 425 lbs in 2020 and I felt absol...

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Underground Fitness Google five star review - Liz Kantak

Liz Kantak

I’m starting my 5th week training with Ron and I’m so much stronger now. Ron is also really enjoyable to talk to, the other members there are so nice. It’s really a joy to train ther...

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Underground Fitness Google five star review - Brett Kennedy

Brett Kennedy

I’ve been training with Ron at Underground Fitness, and the experience has been great. From day one, he listened to my goals and tailored a plan that pushes me without ever feeling overwhelming....

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Underground Fitness Google five star review - Joe Landin

Joe Landin

I’m 37 years old and finally made the decision to take my health seriously, but I’ll admit—I never felt fully comfortable in a gym setting on my own. I knew I needed proper training ...

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Underground Fitness Google five star review - Peggy Stasinos

Peggy Stasinos

With this not being my first experience with personal training, I have to say, this place lives up to their good reviews. Ron in intake is caring and thorough. Christina in Nutrition is knowledgeable ...

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Underground Fitness Google five star review - Guillermo Mazier

Guillermo Mazier

I’ve been a member of Underground Fitness for over a year now and I must say that my experience has been great. When I initially joined, the convenient location near my house was what caught my ...

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Our Proof is in Our Clients

Are you ready to reclaim your fitness, build new heights of confidence, and revitalize your health? 

Our team at Underground Fitness is here to deliver high-quality personal training, fitness classes, and nutrition coaching to men and women across Phoenix. We have years of experience helping people from Central Corridor to Scottsdale lose weight, build muscle, and become the best they can possibly be. When you train with us, no obstacle is too great, no goal is too big, and no aspiration is too challenging. 

From our fitness classes to personal training, Underground Fitness is your ultimate resource for becoming strong, healthy, and happy. 

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What to Expect at Underground Fitness

Learn About the Services Underground Fitness Offers

  • NO BIG CONTRACTS

    NO BIG CONTRACTS

    Our clients love us. We don't force them to be here! 

  • PRIVATE PERSONAL TRAINING

    PRIVATE PERSONAL TRAINING

    We meet you at your level, and work around your lifestyle and schedule. 

  • GROUP PERSONAL TRAINING

    GROUP PERSONAL TRAINING

    We make personal training even more affordable with small semi-private groups.

  • CUSTOM NUTRITION STRATEGY

    CUSTOM NUTRITION STRATEGY

    This is why we are so successful with our clients. NUTRITION is our #1 FOCUS!!!

  • ACCOUNTABILITY AND TRACKING

    ACCOUNTABILITY AND TRACKING

    What you do outside of our four walls matters. We make sure you do what is necessary to achieve your goal- even when you don't want to! 

  • EDUCATION, LIFESTYLE CHANGE, AND RESULTS

    EDUCATION, LIFESTYLE CHANGE, AND RESULTS

    You will learn how to not only get results, but also sustain them. We succeed when we help change your entire lifestyle! ​

Be the Hero of Your Own Story With Underground Fitness!


Personal Training near Central-North Phoenix

Carl Newsome

I, like most overweight people, have tried EVERY DIET imaginable with very little success. After years of battles and struggling, my weight reached my all-time high of 425 lbs in 2020 and I felt absolutely sick. I decided I had to do something. Much like everyone does, I cut out some foods and started light cardio. I started losing weight almost immediately! The first 50 lbs melted away pretty quickly, but then I plateaued. I was stuck. I started counting calories and adding more movement with no success. Luckily, I saw an ad on social media for Underground Fitness. That is where I met Gavino and Tripp. Both are excellent trainers. From day one, they pushed me and kept me accountable. Today, I weigh 235 lbs and I am still losing weight steadily. We have adjusted my goals and constantly adjust my strength training to push my limits and continue to make gains! My next goal is to break that 200 lb mark, and I feel confident that I will achieve that with Underground Fitness. Here, I’m not just a barcode that comes and goes. If I don’t show, Gavino is calling or texting me. He pushes when I need him to and doesn’t allow any excuses! That’s what has worked for me, and I have been able to stick with it for this long. I can’t say that about any other workout regiment or gym membership!
Fitness near Phoenix

Juliaette Chamberlain

I wanted more individual than a group class but not as much as a 1:1…Underground Fitness has been the perfect fit. I was in low/medium shape and stuck in a rut of letting everything else take priority over my health.

You start with a personal consultation where they learn your goals and recommend a plan accordingly. I decided to sign up for 3x a week workouts and 1x a week with their nutritionist, Christina. I paid for the 10-week plan – you can either equip yourself to then go train on your own or to stick with Underground.

You never train with more than 4 people at a time and it is a completely individualized plan. There is variety of learning new exercises while also consistently doing fundamentals. I have all the help I need from a very skilled trainer (shoutout to Ron) but have other people I’m working out with and not over scrutinized (what I didn’t like about a 1:1). I’ve also stuck to my plan because I feel accountable to show up for my scheduled time.

I’ve learned so much from Ron’s demos & explaining the “why” to avoid injury and build strength. He goes above and beyond – when I had sore muscles by my shin he helped with stretches and easy massage I did to get those muscles back to work. Christina (nutrition) was also well worth the investment – she is GOOD. Your health is worth your time, investment, and a good place to help you.
Fitness near Phoenix

Sonya Baca

I recently had the privilege of working with an exceptional personal trainer who didn’t just transform my fitness journey. She helped heal parts of my emotional world, too.

Roxanne is the embodiment of expertise, compassion, and encouragement. From our very first session, I knew I was in capable, caring hands. Her deep knowledge of fitness was evident in every movement and cue, but it was her intuitive ability to connect, listen, and adapt that truly set her apart.

🏋️‍♀️ Customized, Supportive Training

Roxanne tailored every workout to my unique abilities, gently pushing me toward my full potential without ever making me feel overwhelmed. As a beginner, I felt seen and supported. Yet I witnessed her seamlessly shift gears to challenge more advanced clients with the same thoughtful intensity.

She doesn’t just build strength, she builds confidence. With Roxanne, I learned to feel safe in my body. I moved without fear of injury or judgment, and I began to trust myself again.

💛 A Deeper Connection

What truly moved me was her unmatched empathy and emotional intelligence. I had worked with other trainers in the past, but none understood the emotional weight I carried, especially related to the loss of my brother to cancer. Roxanne honored that grief. She helped me continue the health journey my brother and I started together, with sensitivity and grace that I will never forget.

🎯 Results Beyond the Physical

Thanks to Roxanne:

  • I achieved my strength and fitness goals.

  • I gained lasting confidence in myself.

  • I found emotional healing along the way.

✅ Why I Recommend Roxanne

  • 💪 Expertly tailors workouts to all levels

  • 🤝 Creates a safe, supportive, judgment-free space

  • 🔄 Seamlessly adapts between beginner and advanced clients

  • 🌱 Helps clients grow physically and emotionally

  • 🧠 Honors personal stories and journeys

  • ❤️ Motivates far beyond the physical realm

If you’re looking for a trainer who truly goes above and beyond, Roxanne is the one. She changes lives, not just bodies.


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