Build your aerobic base with precison

Testing→Training→ Retesting
no guesswork. no generic Zones

Join the VT1 Builder Waitlist

Why Most conditioning programs don’t work

Most athletes train harder or longer when progress stalls.

But without knowing their true thresholds, intensity becomes guesswork.

That leads to:

  • Easy days that aren’t actually easy

  • Hard days that aren’t hard enough

  • Progress that comes and goes

  • Repeated plateaus, frustration, or breakdown

VO₂ max and ventilatory thresholds remove the guesswork—and this is exactly what we build in this cohort.

That’s what the VT1 Builder is designed to fix.

the VT1 Builder system: Test→Train→Retest

a system that closes the gap between testing and training

This isn’t just a VO₂ max test.
And it’s not just a training plan.

This system bridges the two.

You’ll test, train with clear targets, and retest under guided oversight—so your aerobic system actually adapts, not just gets measured.

The result isn’t guesswork.
The data proves it.

Here’s how the system works ↓

From test → Training → Measured progress (in 4 weeks)

  • 01

    Test

    Establish your aerobic baseline
    Complete your VO₂ max test during the
    testing window to identify VT1, VT2, and
    true training zones.

    You’ll leave with clarity — not estimates — and a clear starting point for the cohort.

  • 02

    Train

    Train at the right intensity
    Follow a personalized aerobic plan built
    directly from your ventilatory thresholds

    No guessing. No “junk miles.” Just focused work that drives adaptation
    without burnout.

  • 03

    Oversight

    Train with expert guardrails
    Receive guidance, feedback, and course correction throughout the cohort.

    You focus on execution — we help you stay on track and out of the gray zone.

  • 04

    Retest

    Measure real improvement
    Repeat the VO₂ max test at the end of the cohort to objectively measure progress.

    See how your VT1 moved — and exactly what to do next.

This is built for you if…

  • You want objective data (not guesswork) guiding your conditioning

  • You’re tired of guessing paces, zones, or intensities — and want clear targets

  • You train for endurance, CrossFit, HYROX, or general fitness and want carryover that actually shows up

  • You want proof your training is working — measured, adjusted, and re-tested

This is NOT for athletes looking for generic programming, shortcuts, or random workouts.

Your data. Interpreted. Adjusted. Re-tested.
The same process used with elite athletes.

This system bridges testing → training → re-testing, so your aerobic base actually moves forward.

Builty by Optimize VO₂

Darnell Hardy, Founder/Coach

  • Endurance coach for Power Monkey Camp @powermonkeyfitness

  • Aerobic Capacity Certified Trainer powered by Chris Hinshaw

  • Select partnered include:
    -Method CrossFit
    -CrossFit SouthPark
    -Best At Training
    -Revive Physical Therapy
    -Tempo Running Studio
    -Tested CF former Games champion Jeff Adler
    -with over 100+ athletes tested

Optimize VO₂ runs metabolic testing and aerobic development for endurance and mixed-model athletes.
This system uses the same testing-driven framework we use in high-performance settings—VO₂ testing ⇾ individualized zones ⇾ weekly oversight ⇾ retest + next steps—adapted for motivated everyday data-driven athletes.

  • Testing-led programming: your plan is built from your test data, not generic pace charts

  • Weekly oversight: we review execution, progress, and adjust as needed

  • Built for mixed-modal athletes: designed for runners and CrossFit/Hyrox-style training

  • Clear outcome metrics: VO₂max, VT1/VT2 markers, and practical training zones

If you can follow a simple weekly plan, we can improve your engine.

“My biggest takeaway was knowing my VT1 and VT2, and figuring out how to improve my VT1…..” - Nathan Zini

Join the VT1 Builder Waitlist

Faq (read this if you’re serious)

  • No. If you can train, you can do this. Experience is irrelevant—execution is everything.

  • Most programs guess at intensity and hope progress happens.

    This system doesn’t.

    You test first, train at you actual thresholds, and retest to confirm adaptation.

    No radom workouts.
    No chasing fatigue.
    Just precision—and proof.

  • Item description

  • Both. The less trained you are, the faster you improve. The more trained you are, the more this matters.

  • No. This is precision aerobic development based on VT1 and VT2—not internet definitions.

  • Yes. It’s safer than guessing your limits and hoping it works.

  • Because estimates create plateaus. Measurement creates progress.

Ready when you are

The VT1 Builder System is derived through small, time-bound cohorts to maintain precision, oversight, and execution quality.

Enrollment isn’t always open. When it is, capacity is limited.

The waitlist exists for athletes who want clarity, not noise.

Join the VT1 Builder Waitlist

No span. No obligation. Just transparency.

Joining the waitlist gives you:

· First access when the next cohort opens

· Priority notice for VO₂ testing window

· Clear expectations before enrollment begins