Most runners and HYROX athletes aren’t unfit — they’re just training in the wrong zones.Here’s the problem:
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Easy runs done too hard
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Threshold work too easy
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Race pace guessed, not trained
Why? Because most people rely on generic calculators or “220 minus age” heart rate formulas ❌
The result?
Burnout, plateaus, and wasted training.
What You Get
Every Accelerator Includes:
✅ Full VO₂Max + Lactate Test (90 mins, lab-grade accuracy)
✅ Personalised HR & pace zones
✅ Race pacing & fuelling strategy
✅ 1 month access to Run Pace Pal
– Identify your limiters
– Follow structured sessions based on your data
– See accurate race predictions
Simple Pricing
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£125— VO₂Max only
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£175 — VO₂Max + Lactate )
Why VO2Max & Lactate Testing
VO₂Max testing measures the maximum amount of oxygen your body can use during exercise. It’s the gold standard for assessing aerobic fitness and endurance capacity.
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Optimise performance: VO2Max testing pinpoints your unique fitness ceiling to help you train at your full potential.
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Precise heart rate and pace zones: Discover your personalised heart rate zones—not generic formulas—for more effective training.
3
Maximise results: Use data-driven insights to ensure every workout is focused on improving your endurance and speed.
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Customised training: Get a tailored plan that addresses your specific fitness limiters for faster progress.
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Fuel efficiency assessment: Understand how efficiently your body burns carbs and fats during exercise to fine-tune your nutrition and energy use.
The Performance Accelerator
The Performance Accelerator combines VO₂Max + Lactate Testing with RMR and fuelling guidance to give you the exact zones and numbers your body needs to perform at its best.
Why It Works
We’ve tested hundreds of athletes — from HYROX competitors to runners chasing PBs. The difference is clear: when you train in the right zones, everything improves.
Endurance builds without burnout
Long runs actually feel sustainable
Threshold sharpens properly
You get faster where it counts
Race pace holds on the day
No more blowing up halfway through
What Happens Next
1️⃣ Book Your Discovery Call
Choose a time that suits you. It’s a quick, no-pressure chat to understand your goals.
2️⃣ Find the Right Fit
We’ll talk through your running or HYROX training and decide which testing package is best for you.
3️⃣ Complete Your Test
If it’s a good fit, we’ll book you in for VO₂Max + Lactate testing (with RMR included if you want the full package).
4️⃣ Get Your Results
You’ll receive your personalised running zones, fuelling numbers, and a 4-week training framework you can slot straight into your plan.
Frequently asked questions
Why Choose Us?
With over 500 VO2Max tests performed, Jack Braniff, MSc, brings unmatched expertise as a Jack Daniels Certified Running Coach, Run Leader, Complete Human Performance Hybrid Coach, and HYROX Coach. Alongside is Joe Neale, Sports Scientist and Physiologist with an MSc from Loughborough University, our team offers cutting-edge, science-backed training designed to help you reach your full potential.
Find Us
Hastingwood Business Park, Erdington, B24 9QR / email. info@boxnutrition.co.uk Tel. 07860945336