VO₂ Metabolic Breath Analysis.
PNOĒ breath-by-breath testing that measures how your body produces and uses energy — your cardiovascular fitness, metabolism, and the exact heart-rate zones that burn fat versus carbs. Real numbers to guide training, weight, and longevity.
You leave with a written plan
Estimate a monthly payment
20–40 minutes on bike or treadmill
PNOĒ breath-by-breath gas analysis
None — light activity, wear workout clothes
Full report + Zone 2 & training prescription
Stop guessing how your body burns energy.
PNOĒ is a clinical-grade metabolic analyzer that reads every breath you take during a short, guided effort on a bike or treadmill. From the oxygen you consume and the carbon dioxide you produce, it maps how efficiently your heart, lungs, and metabolism work together — the same technology used with elite athletes, made accessible here.
The headline number is VO₂ max — the gold-standard marker of cardiovascular fitness and one of the strongest predictors of long-term health and longevity. But the test gives more than one number: your resting metabolic rate, the precise heart-rate zones where you burn fat versus carbohydrate, and where your fitness is being limited (heart, lungs, or metabolism).
That detail is what makes it actionable. Instead of generic advice, you leave with your own Zone 2 training range, a metabolic picture to guide weight and nutrition, and a baseline you can retest against in a few months to prove the plan is working.
Offered at Colonial Aesthetics & Wellness, 1309 Jamestown Rd Ste 204, Williamsburg, VA, serving Yorktown, Newport News and James City County.
Where your body switches from fat to carbs.
Every breath you take on the bike tells the analyzer what you're burning. Plotted against heart rate, it looks like this, and the point where the lines cross is what sets your Zone 2.
- Energy from fat
- Energy from carbohydrate
- Zone 2, your fat-burning base
- VO₂ maxml/kg/minCardiovascular fitness, and one of the strongest predictors of long-term health.
- Resting metabolic ratekcal/dayWhat your body burns at rest, measured rather than estimated from a formula.
- Zone 2 rangebpmYour own fat-burning training range, taken from where the curves sit for you.
- Limiting factorheart · lungs · metabolismWhich system caps your fitness today, so training targets the right thing.
What to expect.
How a VO₂ Metabolic Breath Analysis visit runs, from the days before to the days after. Your provider walks you through all of it at the consultation.
Before
Wear comfortable workout clothes and shoes. Avoid heavy meals, caffeine, and hard exercise for a few hours beforehand, and come well-hydrated. Let us know about any heart or lung conditions so we can screen appropriately.
During
You'll wear a comfortable mask connected to the PNOĒ analyzer while you work through a gradual effort on a bike or treadmill — starting easy and building. It takes 20–40 minutes, and we guide you the whole way.
After
We review your full report together: VO₂ max, resting metabolic rate, your fat- and carb-burning heart-rate zones, and where your fitness is being limited. You leave with a Zone 2 range and a clear plan — and a baseline to retest against.
Who it's for
Who it's for.
- Anyone optimizing fitness, longevity, or healthspan
- Weight-loss and metabolic clients who want precise fat-burning zones
- Athletes wanting data-driven Zone 2 and training targets
- GLP-1 and weight-management clients protecting metabolism
- Anyone who wants a measurable fitness baseline to track over time
Who should hold off or check with us.
- Certain uncontrolled heart or lung conditions (we'll screen first)
- Acute illness — we'll reschedule when you're well
- Anyone unable to do light-to-moderate exercise safely
- Pregnancy — we'll discuss whether it's appropriate
If you're unsure, ask us — we'll go through your history during your consult.
Questions clients ask us most.
Medically reviewed by Brittany Ptachick, MSN, FNP-C and Catherine White, MSN, FNP-C
Board-certified Family Nurse Practitioners · Colonial Aesthetics & Wellness
Get your metabolic baseline.
Book a VO₂ metabolic breath analysis and leave with real numbers — your VO₂ max, your fat-burning zones, and a training plan built on your biology instead of a guess.
Book an AppointmentYou leave with a written plan
Estimate a monthly paymentor text us at 757-585-4647