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VO₂ Max testing · With Extension Health

Know your number.

Your VO₂ Max is one of the strongest indicators of cardiovascular fitness and is closely linked to longevity.

Book your VO₂ Max test
Why VO₂ Max

How big is your engine?

Through our partnership with Extension Health, NRTHRN Strong Unlimited members can measure their VO₂ Max, establish a baseline, train with intention, and come back to see how much they've improved.

Think of VO₂ Max as the size of your aerobic engine, a measure of your body's capacity to take in, transport, and use oxygen during exercise. It's one of the most recognized measures of cardiovascular fitness and an important marker associated with long-term health and longevity.

The good news? Your VO₂ Max isn't fixed. With the right training, you can improve it.

Training on the NRTHRN Trainer
Built into the training

Train your engine.

The NRTHRN Trainer is inspired by cross-country skiing, one of the world's most demanding full-body endurance sports.

By working the upper and lower body together, NRTHRN Strong training challenges your cardiovascular system while building strength, endurance and mobility.

VO₂ Max gives you a way to measure that capacity, and see how it changes as you train.

The partner

Extension Health is a New York longevity medicine clinic combining advanced diagnostics with a proactive approach to long-term health.

Your VO₂ Max assessment takes place at Extension Health's West Village location at 160 7th Avenue South, where their team will measure your VO₂ Max and help you understand what your number means.

They measure. NRTHRN Strong trains.
VO2 Max testing at Extension Health
How it works

Measure. Train. Measure again.

01 · Measure

Know your number.
Establish your baseline.

Start with a VO₂ Max assessment at Extension Health.

02 · Train

Build your engine.

Spend the next 8 to 12 weeks training consistently at NRTHRN Strong. Our training builds strength and cardiovascular capacity.

03 · Measure again

Same test.
Your new number.

Return to Extension Health for your complimentary follow-up VO₂ Max assessment and results consultation.

Your Unlimited member benefit

Your baseline is just the beginning.

$250
Baseline VO₂ Max assessment
Complimentary
Follow-up VO₂ Max assessment
Complimentary
Results consultation with the Extension Health team

If you decide to go further with Extension Health, your $250 baseline assessment fee will be credited toward their Comprehensive Diagnostics Package.

Extension Health × NRTHRN Strong

Train for the long run.

Longevity isn't only about living longer. It's about staying strong, capable and active for as long as possible. Know your number, build your capacity, and see what moves.

Book your VO₂ Max test