
At Zen ReGen Longevity Lab, we believe longevity starts with understanding how your body actually works.
Our Sacramento PNOE metabolic testing measures how your body uses oxygen, burns fuel, and responds to exercise. Instead of relying on estimates or generalized fitness data, PNOĒ gives us personalized insight that can help guide your training, nutrition, and longevity strategy.
Measure → Understand → Individualize → Optimize

PNOĒ is a metabolic and cardiopulmonary exercise test that measures how your body responds to exercise.
During the assessment, you exercise while wearing a specialized breathing mask that analyzes the air you breathe in and out. This allows the system to measure metrics including oxygen consumption (VO₂), carbon dioxide production, ventilation, and respiratory exchange.
These measurements provide insight into how efficiently your body uses oxygen and which fuel sources it relies on during different levels of exercise.
Rather than estimating your fitness based on age, weight, or heart rate alone, PNOĒ provides real-time data from your body.
The PNOE metabolic testing Sacramento patients receive is offered through our physician-led longevity practice, giving you access to a team that looks beyond a single metric or test.
Your results are specific to your physiology. We use your data to help guide exercise, performance, recovery, and longevity strategies tailored to you.
PNOĒ is one piece of the bigger picture. When appropriate, we can pair your results with assessments such as DEXA, WAVi Brain Scan, and other Longevity Lab services to create a more complete view of your health.
Your body changes over time. PNOĒ gives you objective data that can establish a baseline, guide your strategy, and help measure progress.
Whether you're an athlete looking to perform at your best, a high performer optimizing your health, or simply focused on aging well, we use data to help you make smarter decisions for the years ahead.
Understand Your VO₂ Max
VO₂ Max is one of the most useful measures of cardiorespiratory fitness and provides insight into how efficiently your body can use oxygen during exercise.
Train at the Right Intensity
Instead of guessing what “easy,” “moderate,” or “hard” exercise means for your body, PNOĒ can help identify personalized training zones.
Understand How You Burn Fuel
PNOĒ provides insight into how your body uses carbohydrates and fats at different exercise intensities.
Personalize Your Fitness Strategy
Your results can help guide a more individualized exercise approach based on your physiology rather than generic recommendations.
Establish a Baseline
Testing gives you measurable data that can be repeated over time to track changes in fitness and metabolic performance.
Optimize Performance
For athletes and high performers, PNOĒ can help fine-tune training intensity, endurance strategies, and recovery planning.

RMR — Resting Metabolic Rate
Your metabolism at rest.
RMR testing measures how many calories your body burns at rest and how it uses fat and carbohydrates for energy.
During this 10-minute assessment, you’ll simply relax and breathe normally through the PNOĒ mask. No exercise required.
Your results can help identify:
AMR / VO₂ Max — Active Metabolic Assessment
Your metabolism in motion.
Active metabolic testing measures how your body responds as exercise intensity progressively increases.
You’ll exercise on a stationary bike while wearing the PNOĒ mask. As the workload increases, your breathing, oxygen use, heart rate, and metabolism are measured in real time.
Your results can include:
It can be particularly useful for people looking to better understand:
Fine-tune training zones, endurance, and performance.
Use objective data to optimize fitness, energy, and long-term health.
Understand how your body responds to exercise and make your workouts more effective.
Establish a baseline and create a more personalized starting point.
Track cardiovascular fitness and metabolic performance as part of a long-term health strategy.
If you want to understand your body rather than rely on generalized formulas, PNOĒ provides a deeper look.
1. Baseline & Preparation
Your team will review the testing process and make sure you are prepared for the assessment.
2. Get Connected
You'll wear a specialized PNOĒ breathing mask and monitoring equipment while exercising.
3. Exercise Test
You'll exercise through progressively increasing intensities while PNOĒ continuously analyzes your breathing and gas exchange.
4. Data Collection
The system captures information about oxygen consumption, ventilation, heart rate, and fuel utilization throughout the test.
5. Review Your Results
Your results provide a personalized snapshot of your current metabolic and cardiovascular fitness.
6. Build Your Strategy
Your results can be used to help guide your exercise, nutrition, and longevity plan.


Your metabolism is at the center of energy, performance, body composition, and overall health.
We offer PNOĒ because we believe longevity care should be measurable and individualized—not one-size-fits-all.
PNOĒ allows our team to look beyond standard fitness metrics and understand how your body is functioning during exercise. These insights can help us create a more personalized approach to improving metabolic efficiency, cardiovascular fitness, exercise performance, and long-term health.
At Longevity Lab, PNOĒ is one piece of a larger picture. When combined with assessments such as DEXA, WAVi Brain Scan, and other longevity services, it can help create a more comprehensive understanding of your health and performance.
PNOĒ metabolic testing may be appropriate for a wide range of healthy adults, from people beginning their fitness journey to experienced athletes.
Before testing, our team will review your goals, current health, and exercise history to determine whether PNOĒ is appropriate for you.
Because PNOĒ involves exercise, individuals with certain medical conditions or limitations may require medical clearance or may not be appropriate candidates for testing.
Your safety comes first.
Discover how your body uses oxygen, burns fuel, and responds to exercise with PNOĒ metabolic testing at Zen ReGen Longevity Lab.
Measure your baseline. Understand your body. Optimize your future.

PNOĒ is a brand name, not an acronym. Its name comes from the Greek word for "breath." PNOĒ metabolic testing measures the oxygen you use and the carbon dioxide you exhale to assess your metabolism and aerobic fitness. At Zen ReGen, we use these results to help guide personalized exercise and nutrition plans.
PNOĒ can measure VO₂ Max, but it provides much more information than VO₂ Max alone. It can also assess ventilatory thresholds, breathing patterns, and fuel utilization during exercise.
No. PNOĒ can be valuable for anyone interested in understanding their fitness and metabolism—from beginners to elite athletes.
The exact appointment length can vary depending on the testing protocol and your individual assessment. Your Zen ReGen team will provide specific timing when you schedule.
You will exercise while wearing a specialized breathing mask. The test becomes progressively more challenging as exercise intensity increases, but the assessment is designed to be completed under controlled conditions.
Yes. Your team will provide pre-test instructions to help ensure your results are as accurate and useful as possible.
That depends on your goals. Some people may benefit from periodic testing to track changes in cardiovascular fitness and training response, while others may use it primarily to establish a baseline.
PNOĒ does not directly cause weight loss. However, understanding your metabolism and fuel utilization can provide useful information for creating a more individualized exercise and nutrition strategy.
The test itself doesn't improve fitness—it measures it. The value comes from using your results to create a more personalized training strategy and then retesting to measure progress.