PNOĒ is the most vital assessment for optimizing your performance.

If you haven't taken the PNOĒ test, you are training at least 50% less effectively for your next event.

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bicycle exercise

Why Breath Analysis matters

Metabolism is the fundamental process that keeps your body alive and moving by using the oxygen you breathe to convert nutrients (i.e., fats, carbs, protein) into energy. 10,000+ studies have established Breath Analysis as the most reliable method for analyzing this process and leading you to optimal performance. Scroll down to find how.

Dive into the science
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Find your limiting factor

PNOĒ provides a deeper look into your physiology than traditional lab-based VO2max and metabolic tests, thanks to our AI-powered analysis. Trained on 50,000+ metabolic profiles, our algorithms analyze all organs participating in oxygen transport and find the ones keeping you from optimal performance. We then craft the nutrition, training, and recovery your biology needs.

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limiting factor graph

bicycle exercise

Movement economy

The PNOĒ test offers the gold standard in measuring the amount of energy (i.e., calories) your body consumes during exercise. By measuring mechanical power simultaneously (i.e., watts for cycling, pace for running), you accurately measure movement economy and determine the exercise intensity where your body works most efficiently.


The ultimate bike fitting

Changing your position on the bicycle has a profound effect on your movement economy. With PNOĒ, you can test different cycling positions to find the one that maximizes your energy efficiency and allows you to move the most with the least amount of effort.

Dive into the PNOĒ app
bicycle exercise

bicycle exercise

Power & Heart rate training zones

To get the most out of your training, you must train in specific training intensities (AKA heart rate or power zones) specific to your biology. When calculated by smartwatches or equations, these training zones may be as much as 25% off. The PNOĒ test is the most accurate method for calculating them, while the PNOĒ app lets you sync them with any heart rate monitor.

Dive into the PNOĒ app

Nutrition & Race fueling

PNOĒ measures your fat, carbohydrate, and calorie burn with clinical precision and determines the optimal nutrition during, before, and after the race based on your biology and sport. The PNOĒ app then syncs with your metabolic profile allowing you to accurately track your fuel usage and nutrition needs during the race.

bicycle exercise

Clinical-grade accuracy

PNOĒ has been independently validated to provide the same accuracy and information as breath analysis systems found in hospitals and labs. The validation study was conducted by researchers from Rutgers University, Georgetown University, and the Veteran Affairs hospital in Maryland.

Download our validation study