The

Formula 1

Pitstop

for your health

We test the #1 predictor of how long you'll live then show you exactly how to improve it.

Get Your Free Training Plan

Problem

You've built your career on knowing your numbers. But your health? That's been guesswork and feelings. Are you improving or just aging? You're a competent person. You just need the right tools.

Here's the data

you've been

missing.

Here's the data

you've been

missing.

We measure your VO2 max and show you exactly where you stand. Three scores for your heart, lungs, and muscles. Scored, benchmarked and explained.

Get Your Free Training Plan

Metabolic Flexibility

Metabolic Flexibility

Heart Rate Recovery

VO2 Max

VO2 Max

Fat Burning Efficiency

Fat Burning Efficiency

Muscular Efficiency

Muscular Efficiency

Cellular Efficiency

Cellular Efficiency

Carb Burning

From door to data in 45 minutes

You'll be booked into one of our partner facilities in Manchester or London. The whole appointment takes 45 minutes. No special preparation, all fitness levels welcome.

You'll run or cycle wearing a breathing mask and heart monitor. The intensity builds gradually, then pushes you to your maximum. It's hard but the maximum effort is just 10-15 minutes.

Your full report lands the same day. VO2 max, personalised heart rate zones, fat burning zone, cardiovascular age, and your limiting factor. All inside the SPN app, explained in plain English.

Your results don't just tell you where you are. They tell you what's holding you back and where to focus. No generic advice. A clear, specific starting point built around your numbers.

STEP 1

Arrive at your nearest clinic

STEP 1

Arrive at your nearest clinic

STEP 3

Your data, same day

STEP 3

Your data, same day

STEP 2

Push to your limit

STEP 2

Push to your limit

STEP 4

Know exactly what to do next

STEP 4

Know exactly what to do next

What one test tells you.

Get insight into your health you can act on.

Your VO2 max

Understand your baseline.

LEARN MORE

Your VO2 max

Understand your baseline.

Your thresholds,

personalised

125

Zone 1

Zone 2

Zone 3

Zone 4

Zone 5

PEAK FAT BURNING

124bpm

YOUR UPPER LIMIT

168bpm

Your thresholds,

personalised

125

Zone 1

Zone 2

Zone 3

Zone 4

Zone 5

PEAK FAT BURNING

124bpm

YOUR UPPER LIMIT

168bpm

Your thresholds,

personalised

125

Zone 1

Zone 2

Zone 3

Zone 4

Zone 5

PEAK FAT BURNING

124bpm

YOUR UPPER LIMIT

168bpm

Your Limiter

You have three systems powering your fitness: your heart, lungs and muscles. One of them is setting your ceiling.

Your Limiter

You have three systems powering your fitness: your heart, lungs and muscles. One of them is setting your ceiling.

Your Path Forward

Launching in:

Manchester & London

Launching in:

Manchester & London

Every 10 unit improvement in VO₂ max cuts death risk in the next year by around 30%.

Mandsager et al, 2018

Every 10 unit improvement in VO₂ max cuts death risk in the next year by around 30%.

Mandsager et al, 2018

Stop guessing. Start knowing.

One test replaces five guesses.

Your zones ≠ Their zones

Your zones ≠ Their zones

Peak fat burning

Peak fat burning

Your limiter: Muscle

Your limiter: Muscle

Your cardiovascular age

Your cardiovascular age

Training hard ≠ training right

Training hard ≠ training right

Zone 2

Aerobic base. Where endurance is built.

141-165bpm

Aerobic Threshold

165bpm

Zone 3

Tempo. Improves efficiency.

166-167bpm

Anaerobic Threshold

170bpm

Zone 4

Threshold. Raises your ceiling.

168-170bpm

Fat Burning Zone

The heart rate where your body burns fat most efficiently.

129bpm

Peak fat burning zone

Fat

Carbs

Cardiovascular Age

How your heart's fitness compares to your actual age

33years old

3 years younger than your age

10 years youngerYour age10 years older

DATA-DRIVEN.

NOT HOPE DRIVEN.

Your Path Forward

You're in a strong position. A focused effort can push you to elite status.

+4.1ml/kg/min

to reach Excellent

Your zones ≠ Their zones

Your zones ≠ Their zones

Peak fat burning

Peak fat burning

Your limiter: Muscle

Your limiter: Muscle

Your cardiovascular age

Your cardiovascular age

Training hard ≠ training right

Training hard ≠ training right

Zone 2

Aerobic base. Where endurance is built.

141-165bpm

Aerobic Threshold

165bpm

Zone 3

Tempo. Improves efficiency.

166-167bpm

Anaerobic Threshold

170bpm

Zone 4

Threshold. Raises your ceiling.

168-170bpm

Fat Burning Zone

The heart rate where your body burns fat most efficiently.

129bpm

Peak fat burning zone

Fat

Carbs

Cardiovascular Age

How your heart's fitness compares to your actual age

33years old

3 years younger than your age

10 years youngerYour age10 years older

DATA-DRIVEN.

NOT HOPE DRIVEN.

Your Path Forward

You're in a strong position. A focused effort can push you to elite status.

+4.1ml/kg/min

to reach Excellent

Your zones ≠ Their zones

Your zones ≠ Their zones

Peak fat burning

Peak fat burning

Your limiter: Muscle

Your limiter: Muscle

Your cardiovascular age

Your cardiovascular age

Training hard ≠ training right

Training hard ≠ training right

Zone 2

Aerobic base. Where endurance is built.

141-165bpm

Aerobic Threshold

165bpm

Zone 3

Tempo. Improves efficiency.

166-167bpm

Anaerobic Threshold

170bpm

Zone 4

Threshold. Raises your ceiling.

168-170bpm

Fat Burning Zone

The heart rate where your body burns fat most efficiently.

129bpm

Peak fat burning zone

Fat

Carbs

Cardiovascular Age

How your heart's fitness compares to your actual age

33years old

3 years younger than your age

10 years youngerYour age10 years older

DATA-DRIVEN.

NOT HOPE DRIVEN.

Your Path Forward

You're in a strong position. A focused effort can push you to elite status.

+4.1ml/kg/min

to reach Excellent

£299

The clarity you need to start

making real changes.

Stride

£299

The clarity you need to start

making real changes.

Stride

Book Stride

You've built your career on knowing the numbers. Your health deserves the same.

One test measures your VO2 max, heart function, lung capacity, and muscle efficiency.

You'll identify your limiting factor—heart, lungs, or muscles—and know exactly where to focus your training.

You've hit every target you've committed to. You'll hit this one too, with the right starting point.

Book Stride

Join the first 50.

Founding cohort: 50 places · Manchester & London, UK

FAQ

I already feel healthy, why bother?

What does the test actually involve?

What if this just makes me anxious?

Will this just tell me to 'exercise more'?

How is this different from my Apple Watch or Garmin?

What do I get after the test?

See all