Your measured VO₂ Max
Your maximal oxygen uptake, expressed relative to body weight and interpreted within the appropriate age- and sex-based context.
Testing · #33495F
VO₂ Max
Testing.
Measure how effectively your body takes in, transports and uses oxygen under increasing effort—directly through breath-by-breath gas analysis, not estimated from a wearable.
~60 minutesIncluding preparation and recovery
Direct measurementBreath-by-breath gas analysis
Same-day reviewResults and training zones
RepeatableTrack change over time
What It MeasuresOne number.
One number.
A much larger story.
VO₂ Max is the maximum amount of oxygen your body can use during intense exercise. During the test, you wear a fitted mask while cycling or running as the workload increases in controlled stages.
The system measures the oxygen you inhale and the carbon dioxide you exhale. This allows us to evaluate cardiorespiratory fitness directly and identify the thresholds that shape how your body responds as intensity rises.
Wearables and age-based formulas can be useful for trends. Laboratory gas analysis provides a direct physiological measurement for establishing your baseline.
What You Learn01 02 03
More useful than a single score.
Your ventilatory thresholds
The transition points in your breathing response that help define changes in exercise intensity and metabolic demand.
Your individualized training zones
Zones based on your measured response instead of a population formula built primarily from age.
Why It Matters
Cardiorespiratory fitness is a meaningful health signal.
Large observational studies consistently associate higher cardiorespiratory fitness with lower all-cause and cardiovascular mortality risk. The American Heart Association has advocated for greater clinical recognition of cardiorespiratory fitness because of its predictive value.
That does not mean a VO₂ Max result predicts an individual lifespan or proves causation. It means cardiorespiratory fitness provides useful context—and, unlike age, it is a capacity that can often respond to training.
Strongly associated with outcomes
Fitness has shown consistent relationships with long-term health outcomes across large and diverse populations.
Useful alongside other measures
VO₂ Max adds a functional measure that laboratory biomarkers, body weight and body composition cannot provide alone.
Measurable over time
A baseline and later retest create an objective way to evaluate whether training is changing capacity.
VO₂ Max is one data point, not a diagnosis. Results should be interpreted alongside health history, symptoms, medications and other relevant assessments.
Your Test
What to expect.
01 · BEFORE
Prepare
- Avoid strenuous training for approximately 24 hours
- Avoid a heavy meal shortly before testing
- Follow the caffeine and medication instructions provided by our team
- Bring comfortable training clothing and shoes
02 · DURING
Measure
- A fitted mask collects breath-by-breath data
- The workload begins comfortably and rises in stages
- Heart rate and physiological response are monitored
- The test continues toward your individual limit when appropriate
03 · AFTER
Interpret
- Complete a guided cooldown and recovery period
- Review your measured VO₂ Max and thresholds
- Receive zones based on your actual response
- Identify an appropriate point for retesting
Who It Is For
A baseline for longevity and performance.
The test can serve different purposes depending on the person. For an athlete, it can refine training intensity. For someone focused on longevity, it establishes a functional measure of cardiorespiratory capacity. For a member beginning a Circuit, it provides a baseline that can be measured again.
People who want training zones based on measured physiology
Adults establishing a cardiorespiratory fitness baseline
Athletes seeking more precise intensity guidance
People tracking whether a structured program is working
Wearable users who want to compare an estimate with laboratory measurement
Individuals who can safely complete testing after appropriate screening
How It FitsStep One Step Two Step Three
Measure. Match. Re-measure.
Establish the baseline
Measure cardiorespiratory capacity before making assumptions about where you should begin.
Build from the data
Use the result, your goals and other assessments to guide the intensity and structure of your Circuit.
Measure again
Repeat testing at an appropriate interval to determine whether measurable capacity has changed.
Frequently Asked
Questions answered.
My watch already estimates VO₂ Max. Why test?
A wearable estimates VO₂ Max using variables such as heart rate, pace and an algorithm. Laboratory testing measures respiratory gas exchange directly. Both can be useful, but they are not the same type of measurement.
Do I need to be an athlete?
No. The workload begins at a manageable level and progresses according to the testing protocol. Your result reflects your current capacity, whatever the starting point.
How difficult is the test?
A true maximal assessment becomes challenging near the end. The protocol progresses gradually, and your team will explain the stopping criteria and coach you throughout the test.
Is VO₂ Max testing appropriate for everyone?
No. Screening matters, particularly for people with cardiovascular, pulmonary or other medical concerns. Tell the team about health conditions, symptoms and medications before testing.
What is considered a good result?
Interpretation depends on age, sex, testing protocol and individual context. Your current number matters, but the direction of change over time can be more useful than chasing a universal score.
When should I retest?
The appropriate interval depends on your objective and training plan. Many structured programs use a later retest after enough time has passed for a meaningful adaptation to be detectable.
Continue Testing
Build a more complete baseline.
Your Baseline Starts Here
Measure what your wearable can only estimate.
Start with your goals and current capacity. We will help determine whether VO₂ Max testing belongs in your starting assessment.
Start Your Upgrade →VO₂ Max testing is an assessment, not a diagnosis or treatment. Participation is subject to screening. Individual results and appropriate testing protocols vary.