VO2 Max Testing
Want to Feel 40 When You're 60? VO2 Max Testing Gives You the Personalized Roadmap to Train Smarter, Live Longer, and Maximize Your Healthspan
Stop guessing. Start knowing.
Most people over 40 are training in the wrong heart rate zones - either too easy to make real progress, or too hard, leading to burnout, injury, and frustration. You're putting in the work, but not seeing the results you deserve.
What if you could know exactly how to train for your body, your goals, and your longevity?
VO2 Max testing gives you the precise data you need to optimize every workout, burn fat efficiently, boost energy, and add healthy, vibrant years to your life. Because age is your choice - and it starts with having the right information.
Dr. Jason Han’s Story: From Guessing to Knowing…
I'm Dr. Jason Han - 7-time US National Taekwondo Team member, 3-time World Silver Medalist, and I came within a heartbeat of making the Olympic team.
For over a decade, I worked as a physical therapist with elite athletes - the Pittsburgh Steelers, Cirque du Soleil performers, and LA Football Club players. I helped world-class athletes optimize their performance and recover from injuries.
But here's what I didn't know: I was training my own body completely wrong.
I Believed Hard Work Meant Hard Workouts
Like many high-achievers, I thought if I wasn't sweating, pushing hard, and feeling destroyed after every workout, I wasn't making progress. My routine was intense: high-intensity interval training, heavy strength sessions, pushing my limits constantly.
I wouldn't do low-intensity, long-duration cardio because I didn't think it did anything. Why waste time on "easy" workouts when I could push harder?
But despite all that hard work, I was struggling:
Afternoon energy crashes that had me reaching for my 2nd or 3rd coffee just to get through the day
Constantly sore and needing more rest days than I wanted
Stubborn belly fat and love handles that wouldn't budge no matter how hard I trained
Sleep quality suffered - I'd wake up groggy instead of refreshed
Recovery was slow - workouts felt harder than they should
I was doing everything I thought was "right," but my body was telling a different story.
Then I Got My VO2 Max Test
The results shocked me.
I discovered my resting metabolism wasn't burning fat efficiently. I was completely missing Zone 2 cardio - the "longevity zone" that builds aerobic capacity and metabolic efficiency. The intense training I thought was optimal was actually working against me.
For the first time in my athletic career, I stopped guessing and started knowing.
The Transformation
I adjusted my training based on my actual data - not what I thought should work, but what my body actually needed:
My primary focus stayed on strength training (which I love)
I added 1-2 long Zone 2 sessions per week - lower intensity work that felt "easy" but was building my aerobic base
I kept 1-2 HIIT sessions per week - but now I knew exactly how hard to push and when to back off
Within 2-3 weeks, I started feeling more energetic throughout the day. No more afternoon crashes.
After 6-8 weeks, the changes became undeniable:
The stubborn belly fat started melting away - love handles disappeared
More definition from weight training - my body composition shifted
Sleep quality improved dramatically - waking up refreshed instead of groggy
Recovery accelerated - I wasn't constantly sore and beat up
The Proof Was in the Re-Test
Three months after implementing my VO2 Max data, I re-tested. The results proved everything I was feeling:
My resting metabolic rate improved
My metabolic efficiency increased significantly
My resting heart rate lowered
The numbers confirmed what my body was telling me: this wasn't just subjective - it was real, measurable progress.
What I Wish I'd Known as an Elite Athlete
Looking back at my competitive career - those three World Silver Medals, narrowly missing the Olympic team - I can't help but wonder:
Would having this data have made THE difference? I'm not sure. But I know it would have given me a much better chance to reach my goals. It would have been one more edge, one more piece of the puzzle.
But here's what matters now: I'm no longer a competitive athlete. I'm an entrepreneur, a father, a husband. And I want to be healthy and vibrant for a long time - for myself and for the people I love.
That's what VO2 Max testing gives you: the knowledge to train smarter, live longer, and maximize every year ahead of you.
Because age is your choice. And your choice starts with data.
What is VO2 Max Testing?
VO2 Max testing measures how efficiently your body uses oxygen during exercise - and it's one of the most powerful predictors of longevity, cardiovascular health, and overall fitness.
Think of it as a complete metabolic analysis of your body's engine. It tells you:
How well your heart, lungs, and muscles work together
Your true cardiovascular fitness age (which may be very different from your chronological age)
The exact heart rate zones where you burn fat most efficiently
Your aerobic and anaerobic thresholds
How many calories you burn at rest and during activity
This Isn't Just for Athletes - It's a Longevity Test
Here's the truth: your VO2 Max naturally declines with age. But with the right training based on YOUR specific data, you can maintain or even improve it - essentially choosing your biological age regardless of your chronological age.
Research shows that VO2 Max is one of the strongest predictors of healthspan and lifespan. People with higher VO2 Max scores live longer, healthier lives with less risk of cardiovascular disease, metabolic dysfunction, and age-related decline.
The problem? Most people over 40 are training in the wrong zones:
Too easy to create real adaptation and progress
Too hard, leading to overtraining, burnout, and injury
Missing the crucial Zone 2 work that builds the aerobic base for longevity
Your fitness tracker can only guess at your zones based on generic age formulas. VO2 Max testing actually measures YOUR unique physiology and gives you a personalized roadmap.
Two Ways to Test: Choose What's Right for You
At HealthFit, we offer two complementary tests using the PNOĒ metabolic analysis system - the gold standard in VO2 Max testing technology.
The RMR Test: Understanding Your Metabolic Foundation
Resting Metabolic Rate (RMR) Test
What It Measures:
How many calories your body burns at rest
Your metabolic function and efficiency
How well your body uses fat versus carbohydrates for fuel
Your baseline energy expenditure
What the Experience Is Like:
This is the easiest, most relaxing test you'll ever take.
Total appointment time: 30 minutes
Actual testing time: 10-15 minutes
You'll lie down comfortably in our welcoming clinic space (designed to feel more like a high-end fitness facility than a medical office) and simply breathe normally through a comfortable mask that measures your oxygen and CO2 levels.
The mask isn't claustrophobic, and most people adjust to it within the first minute. All you have to do is relax and breathe - many clients say it's almost meditative.
Who It's For:
The RMR test is perfect if you're:
Struggling with weight loss plateaus despite "doing everything right"
Wondering why your metabolism feels "slow"
Trying to understand your true caloric needs (not generic calculator estimates)
Dealing with metabolic concerns or pre-diabetes
Looking to optimize nutrition for fat loss or body composition
Wanting to understand your body's baseline before adding exercise testing
The Active VO2 Max Test: Discovering Your Optimal Training Zones
Active Metabolic Rate (AMR) / VO2 Max Test
What It Measures:
Your cardiovascular fitness and VO2 Max score
Your precise heart rate training zones (Zones 1-5)
Your aerobic and anaerobic thresholds
Your fat-burning efficiency at different intensities
How your heart rate, oxygen consumption, and effort align
What the Experience Is Like:
This test is completely personalized to your fitness level and physical comfort.
Total appointment time: 30 minutes
Actual testing time: 15-20 minutes
You choose your equipment: treadmill or bike, based on what feels most natural and comfortable for your body. If you have knee or hip concerns, the bike is a great low-impact option. Most people choose the treadmill because walking or running feels more natural - but it's completely your choice.
We cater the exercise to your activity level and capabilities. Whether you're just starting your fitness journey or you're a serious athlete, we'll design the test around where you are right now.
You'll wear a comfortable breathing mask that measures your oxygen and CO2 (just like the RMR test - not claustrophobic, and you'll adjust quickly). You'll also wear a heart rate monitor.
The test starts easy and gradually increases in intensity. You're in complete control - you decide when you've reached your limit and want to stop. There's no pressure to push beyond what feels right for your body.
Our trained team is with you the entire time, monitoring your data and ensuring your safety and comfort.
Who It's For:
The Active VO2 Max test is perfect if you're:
Training for performance but not seeing the results you expect
Wondering if you're working out too hard or not hard enough
Wanting to maximize fat burning during exercise
Concerned about cardiovascular health and longevity
Trying to improve endurance and stamina
Looking to train smarter and reduce injury risk
Curious about your true fitness age versus your chronological age
Integrating wearable technology and want accurate zones (not generic estimates)
Get the Complete Picture: Bundle Both Tests
Our most popular option: bundle both tests for comprehensive metabolic insights.
The RMR test shows you how your body functions at rest - your metabolic foundation.
The Active VO2 Max test shows you how your body performs under stress - your cardiovascular capacity and optimal training zones.
Together, they give you a complete metabolic profile: how many calories you burn at rest and during activity, how efficiently you use fat for fuel, and exactly how to train for your unique physiology and goals.
Inquire about bundling both tests for the most complete understanding of your body's metabolism.
The Benefits of VO2 Max Testing: From Guessing to Knowing
When you know your actual data instead of relying on generic formulas and guesswork, everything changes.
Discover Your True Cardiovascular Fitness Age
Your VO2 Max score reveals your biological fitness age - which may be younger or older than the number on your birthday cake. This single number is one of the most powerful predictors of longevity and healthspan.
Identify Your Exact Fat-Burning Zones
Stop guessing at which heart rate burns fat most efficiently. Your test reveals the precise zones where your body preferentially uses fat for fuel - often very different from what generic formulas suggest.
Optimize Training Intensity for Real Results
Know exactly when you're working hard enough to create adaptation, and when you're working so hard you're actually undermining your progress. No more wasted workouts.
Improve Metabolic Efficiency
Understand how well your body converts fuel to energy, and get specific guidance on improving your metabolic function through targeted training and nutrition.
Increase Energy and Endurance
Build your aerobic base systematically with Zone 2 training - the foundation for all-day energy, not just workout performance. Say goodbye to afternoon crashes.
Enhance Longevity and Healthspan
VO2 Max is directly correlated with how long you'll live and how well you'll live those years. Improving this one metric has cascading benefits for every system in your body.
Get Personalized Nutrition Guidance
Your metabolic data reveals your actual caloric needs and macronutrient targets - not generic calculator estimates that may be wildly off for your unique physiology.
Train Smarter, Not Harder
Stop the cycle of overtraining and burnout. Learn when to push, when to back off, and how to make every workout count toward your actual goals.
Reduce Overtraining and Injury Risk
Understand your recovery capacity and avoid the chronic soreness, fatigue, and injuries that come from constantly pushing too hard without adequate aerobic base.
Track Progress with Precision
Re-test every 3 months to see objective, measurable improvements in your metabolic function, cardiovascular fitness, and training zones. Watch your biological age improve regardless of your chronological age.
What You'll Learn From Your Results
Your VO2 Max test provides a comprehensive analysis that goes far beyond a single number. Here's what you'll discover:
Your True Heart Rate Training Zones
Forget the generic "220 minus your age" formula. You'll get your actual Zones 1-5 based on your unique physiology:
Zone 1: Active recovery
Zone 2: The longevity zone - aerobic base building, fat burning, all-day energy
Zone 3: Tempo training - sustainable but challenging
Zone 4: Threshold training - hard but controlled
Zone 5: Maximum effort - short, intense intervals
Most people discover they've been training too hard, missing the crucial Zone 2 work entirely, or spending too much time in the "gray zone" between easy and hard - not easy enough to build aerobic base, not hard enough to create real adaptation.
Your Exact Zone 2 Range
This is the game-changer for longevity and metabolic health. Zone 2 is where you build mitochondrial density, improve fat oxidation, and create the aerobic foundation that supports everything else.
Your wearables can only guess at this zone. Your VO2 Max test measures it precisely.
Your Aerobic and Anaerobic Thresholds
These are the critical transition points where your body shifts from primarily aerobic metabolism to anaerobic. Knowing these thresholds allows you to train at exactly the right intensity for your goals.
Your Metabolic Efficiency
How well does your body use fat versus carbohydrates at different intensities? Your results show your "crossover point" and reveal opportunities to improve fat-burning efficiency.
How Your Heart, Lungs, and Muscles Cooperate
VO2 Max testing reveals how efficiently your cardiovascular and muscular systems work together. This integrated view shows you where the limitations are and how to address them.
Your Personalized Caloric and Macronutrient Needs
Based on your resting and active metabolic rates, you'll receive specific targets for daily calories, protein, carbohydrates, and fats - tailored to your goals whether that's fat loss, performance, or longevity.
The PNOĒ App & Your Personalized Plan: Data That Works for You Every Day
Your VO2 Max test isn't just a one-time snapshot - it's the foundation for ongoing, personalized guidance.
Daily Workout Guidance with Precise Heart Rate Zones
The PNOĒ mobile app gives you daily workout recommendations with your exact heart rate zones. No more guessing if you're working hard enough or too hard - you'll know in real-time if you're in the right zone for your goal that day.
Personalized Nutrition Targets
Receive specific daily targets for:
Total calories based on your actual metabolic rate (not generic estimates)
Macronutrient breakdown (protein, carbs, fats) optimized for your goals
Meal timing recommendations to support your training and recovery
Integration with Your Favorite Wearables
The PNOĒ app integrates seamlessly with:
Apple Watch
Garmin
Whoop
Oura Ring
Fitbit
Your wearable tracks your heart rate during workouts and throughout the day, and the PNOĒ app keeps you on track based on YOUR actual tested data - not generic age-based formulas.
Ongoing Tracking and Adjustments
As you train and your fitness improves, the app helps you track progress and adjust your approach. Combined with re-testing every 3 months, you'll have a complete picture of how your body is adapting and evolving.
Optional Upgrade: Detailed Meal Plans and Workout Programming
The PNOĒ app gives you personalized zones and general nutrition targets. If you want more hands-on guidance, our team can create:
Detailed meal plans with specific recipes and portions
Specific workout programming designed around your goals, schedule, and preferences
These optional upgrades take you from having the data to having a complete done-for-you plan.
Who Benefits From VO2 Max Testing?
You Want to Feel 40 When You're 60 (Or 50 When You're 70)
This is what we specialize in at HealthFit. If you're focused on longevity, anti-aging, and living your best life for decades to come, VO2 Max testing gives you the roadmap.
You're not interested in just "aging gracefully" - you want to choose your biological age and maintain the energy, strength, and vitality to do everything you love. VO2 Max testing shows you exactly how to train for healthspan, not just lifespan.
You're Struggling with Weight Loss or Stubborn Fat
You're eating well, working out consistently, but the scale won't budge and the stubborn belly fat remains.
The problem is usually metabolic efficiency and training in the wrong zones. VO2 Max testing reveals exactly where your body burns fat most efficiently and how to optimize your metabolism - no more guessing, no more frustration.
You're Training Hard But Not Seeing Results
You're putting in the work - sweating, pushing, staying consistent - but your performance has plateaued or your body composition isn't changing.
Often, the issue is training too hard without enough aerobic base, or spending too much time in the "gray zone" that's neither easy enough nor hard enough. Your test reveals exactly where you need to adjust.
You're an Athlete Looking for That Extra Edge
Whether you're training for a marathon, triathlon, competitive sport, or just want to perform at your best, VO2 Max testing gives you the precision that separates good from great.
Know your exact thresholds, optimize your training zones, and track improvements with objective data instead of guesswork.
You Have Metabolic Concerns or Pre-Diabetes
Your metabolic efficiency directly impacts blood sugar regulation, insulin sensitivity, and overall metabolic health. VO2 Max testing reveals how well your metabolism is functioning and gives you specific interventions to improve it.
Zone 2 training, in particular, has powerful effects on metabolic health and glucose regulation.
You Want to Optimize Cardiovascular Health
Heart disease remains the leading cause of death, and VO2 Max is one of the strongest predictors of cardiovascular health and longevity.
Whether you're concerned about family history, want to reverse early warning signs, or simply want to optimize your heart health, VO2 Max testing gives you a clear baseline and roadmap for improvement.
You're Tired of Generic Advice That Doesn't Work for Your Body
Every body is different. Generic formulas, cookie-cutter programs, and one-size-fits-all advice rarely work - especially after 40 when metabolism, hormones, and recovery capacity change.
VO2 Max testing gives you data specific to YOUR body, YOUR metabolism, YOUR cardiovascular system. Finally, a plan designed for you.
What to Expect: Your VO2 Max Testing Journey
Before Your Test: Preparation Guidelines
To ensure the most accurate results, please follow these important guidelines:
3 hours before your test:
Avoid caffeine (coffee, tea, energy drinks, pre-workout supplements)
Avoid eating meals or snacks
Stay well-hydrated with water
The day before your test:
Avoid intense workouts or heavy training sessions
Get adequate sleep
Continue normal hydration
Day of your test:
Wear comfortable athletic clothing (especially important for Active VO2 Max test)
Arrive a few minutes early to complete any necessary paperwork
Bring your wearable device if you'd like to sync it with the PNOĒ app
Please plan accordingly - these guidelines help ensure your results are as accurate as possible.
During Your Test: The Experience
Your appointment is 30 minutes total at our Pasadena location.
You'll be in our welcoming clinic space, designed to feel more like a high-end fitness facility than a medical office. Our trained team will guide you through every step.
For the RMR Test (10-15 minutes of testing):
You'll lie down comfortably and relax
We'll place a comfortable breathing mask that measures your oxygen and CO2
Simply breathe normally - many clients find it almost meditative
The mask isn't claustrophobic, and most people adjust within the first minute
For the Active VO2 Max Test (15-20 minutes of testing):
Choose your equipment: treadmill or bike (we'll help you decide based on your comfort and any joint concerns)
We'll fit you with the breathing mask and heart rate monitor
The test starts easy and gradually increases in intensity
You're in complete control - you decide when you've reached your limit
We cater the exercise to your activity level and capabilities - whether you're a beginner or a serious athlete
Our team monitors your data and safety throughout
After Your Test: Results and Review
Processing time: 1-2 days
Your results are processed by PNOĒ's team of metabolic experts who analyze your data and generate your comprehensive report.
Results review session: 30 minutes (included with your test)
You'll return for a separate appointment where our trained team walks you through:
What your numbers mean for your specific goals
Your personalized heart rate zones
Your metabolic efficiency and opportunities for improvement
How to use the PNOĒ app and integrate with your wearables
Specific recommendations for training and nutrition
Questions and clarifications
This isn't a rushed "here are your numbers" session - it's a comprehensive review to ensure you understand your data and know exactly how to use it.
Ongoing: Tracking Progress
We recommend re-testing every 3 months to track your progress and adjust your plan as your fitness improves.
Your body adapts, your zones change, and your metabolic efficiency improves - re-testing shows you objective proof of your progress and helps you continue optimizing.
Between tests, the PNOĒ app keeps you on track with daily guidance and wearable integration.
Integration with Other HealthFit Services
Your VO2 Max data integrates beautifully with our other regenerative therapies:
Hyperbaric Oxygen Therapy (HBOT) - enhance oxygen delivery and recovery
Red Light Therapy - support mitochondrial function and recovery
Regenerative Therapies (shockwave and EMTT) - optimize tissue healing
Physical Therapy - address movement limitations and injury prevention
Chiropractic Care - optimize alignment and nervous system function
At HealthFit, we take a comprehensive approach to longevity and performance. Your VO2 Max data helps us personalize every aspect of your care.
Stop Guessing. Start Knowing. Choose Your Age.
You've been training hard. Eating right. Doing everything you think you should do.
But without data, you're guessing. And guessing leads to frustration, plateaus, and wasted effort.
VO2 Max testing changes everything. It gives you the precise, personalized roadmap to:
Train in the right zones for fat loss, performance, and longevity
Build the aerobic base that supports all-day energy
Optimize your metabolism and cardiovascular health
Track real, measurable progress every 3 months
Add healthy, vibrant years to your life
Because age is your choice. And your choice starts with knowing your body's actual data - not generic formulas, not guesswork, not what worked for someone else.
As Dr. Jason discovered: the difference between struggling and thriving is often just knowing what your body actually needs.
You don't need to train harder. You need to train smarter.
You don't need another generic program. You need YOUR data.
You don't need to accept decline as inevitable. You need to choose your biological age.
VO2 Max testing at HealthFit gives you all of this.
Ready to Discover What Your Body Actually Needs?
Whether you're just beginning your fitness journey or you're a seasoned athlete, whether you're 45 or 65, whether you want to lose stubborn weight or optimize for longevity - VO2 Max testing meets you where you are and shows you exactly where to go next.
Our most popular option: Bundle both RMR and Active VO2 Max tests for comprehensive metabolic insights.
What's included:
30-minute testing appointment at our Pasadena location
Results processed by PNOĒ metabolic experts
30-minute results review session with our trained team
PNOĒ mobile app access with personalized zones and nutrition targets
Wearable integration (Apple Watch, Garmin, Whoop, Oura, Fitbit)
Ongoing tracking and guidance
Optional upgrades:
Detailed meal plans and specific workout programming
Integration with other HealthFit regenerative therapies
Inquire About VO2 Max Testing
Fill out the form below and someone from our team will contact you to schedule your test and answer any questions.