Your appointment

How to prepare for your VO₂ Max test

You're booked. This is the gold-standard measurement of your aerobic fitness, and a leading marker of longevity. Here's everything you need to arrive ready to perform, and exactly what to expect on the day.

What your test will tell you

Your VO₂ max

The single best measure of cardiorespiratory fitness, and a powerful predictor of long-term health.

Your training zones

Personalised heart-rate zones so you train with precision, not guesswork.

Your fat-max zone

The exact intensity where your body burns fat most efficiently.

The gold-standard way to understand your aerobic limits, then break through them. Train at the right intensities with objective data, not guesswork.

First: complete your medical questionnaire

We've emailed you a medical questionnaire that's unique to your booking. Please complete that one. It links your answers to your appointment automatically.

  • Check your inbox for it, and don't forget your spam / junk folder, as it can sometimes land there.
  • Complete it as soon as possible, and before your test. We can't proceed with your appointment until it's done.
  • Can't find it? Contact us and we'll resend your link straight away.

What to expect on the day

Your appointment lasts around one hour. The maximal test itself is short, just 15-20 minutes. Here's how it flows:

  1. Welcome & waiver

    You'll review and sign your testing consent form.

  2. Your briefing

    We explain exactly what's going to happen, walk you through the test, and cover all safety guidance. Questions welcome.

  3. Heart-rate monitor & warm-up

    We fit your chest-strap heart-rate monitor and you warm up on the treadmill.

  4. Your protocol

    The test is programmed specifically for you, based on your profile, not a one-size-fits-all setting.

  5. Mask on

    We fit the face mask that measures your breathing.

  6. The test

    You walk, then run at gradually increasing intensity until you reach your limit. We also capture your recovery data in the minutes immediately after. You're in full control the whole time, and fully supervised from start to finish.

  7. Your debrief

    Before you leave, we share your preliminary VO₂ max result and talk you through some of your data on the spot.

A note on your environment: depending on your location, your test may take place in an open, working gym rather than a private room. It's still fully supervised and your results stay completely confidential. You may simply be testing alongside other gym members. Prefer a quieter slot? Just let us know.

Your results

You'll get your preliminary VO₂ max figure and a first look at your data at the end of your test. We then take your data away to analyse it properly, and your full, detailed report lands in your inbox within 48 hours.

Your prep checklist

Your physiology shifts through the day: sleep, caffeine, hydration, recent meals and training all move the numbers. Standardising your condition before each test makes sure your result reflects your true fitness, not a short-term fluctuation. Follow this:

The days before
Stay well hydrated. Prioritise good sleep, especially the night before.
24 hours before
No hard or strenuous training. No alcohol.
6-8 hours before
No caffeine or stimulants: coffee, energy drinks, pre-workout. Where you safely can, also skip cold & flu remedies, as they can raise your heart rate.
3 hours before
Eat a light, high-carb meal. Avoid anything heavy.
Right before
Don't over-drink water just beforehand. Tie long hair up so the mask seals properly.

What to wear & bring

Wear

Comfortable exercise clothing and proper running trainers, as you'll be on a treadmill at full effort.

Bring

A water bottle, a small towel, and your inhaler if you use one.

Please tell us if…

Your safety comes first. Let us know, before or on the day, if any of these apply:

  • You feel unwell or have any infection. If you wake up ill, contact us to reschedule rather than push through.
  • You're carrying an injury.
  • You take beta-blockers or heart / blood-pressure medication. Don't stop any medication. Just tell us, as it can affect your heart-rate response.
  • You have a heart condition or any history of chest pain.
  • You are pregnant.
One more tip: testing again in future? Book at a similar time of day each time, so your results compare like-for-like.

Your confirmation email has your specific location, address and arrival details.
Any questions before the day? We're here to help.