Train and fuel based on your physiology — not guesswork
A structured field test — on the bike or on foot. Estimate your metabolic profile. Turn it into sport-specific training zones, substrate utilisation models, and race-day fueling strategy.
The system
From test to race-day execution
Estimate your metabolic profile
A short, structured field test. Estimate your metabolic fingerprint — for cycling or running.
- ✓ VO2max (ml/kg/min)
- ✓ VLamax (mmol/L/s)
- ✓ Metabolic thresholds (LT1 · LT2)
- ✓ Personalised training zones
"Understand what your engine can produce"
Unlock your physiology
Go beyond raw numbers. See where your aerobic and anaerobic thresholds actually sit.
- ✓ LT1 — aerobic threshold
- ✓ LT2 — anaerobic threshold
- ✓ Personalised training zones
- ✓ Track changes after every block
"Train with precision instead of guesswork"
Upgrade to Pro →Model your fueling strategy
Race nutrition modelled on your actual metabolism — for cycling and running. Not population averages.
- ✓ CHO demand at race intensity
- ✓ Substrate utilisation curves
- ✓ Glucose–fructose strategy
- ✓ Complete race fueling plan
"Fuel the work your body actually requires"
Available with Pro
Included with Pro →Why it matters
Your physiology determines everything
Training
Your zones define which energy systems you develop — and which you leave undertrained.
Pacing
Your thresholds define the intensity you can actually sustain across hours of racing.
Fueling
Your metabolism defines how much carbohydrate you oxidise — and how much you need to take in.
"When these align, performance follows."
Race day
Turn insight into race-day performance
Pace to your threshold
Hold intensity based on your lactate threshold — the effort you can actually sustain, derived from your own physiology.
Model the real demand
Estimate the carbohydrate your body oxidises at race intensity. Use that as the basis for your fueling strategy, not a generic rule.
Avoid the two big mistakes
Overpacing and underfueling compound each other. Accurate models of both give you better decision support on race day.
"Execute your race with confidence."
Physiology-driven model · Validated against leading metabolic systems · Support