Our science team models what a ride costs the body, grades the evidence behind every number, and publishes what we find, including where the model is wrong.
How much an athlete has stored, how much a ride is burning, and how much the gut can take in per hour, and how that ceiling rises with training.
Where the limits sit today rather than on test day, how far they drift within a ride, and how much reserve is left above them.
Three regulators read from a short morning check-in and the seven-day balance they add up to, graded honestly as low confidence.
What the last hour of a long ride costs, read within the ride from heart rate against power and the fall in sustainable power.
How an athlete changes over weeks and years: detraining, age, and the momentum of each system, as modifiers rather than measurements.
A replication in a trained population confirms that the gut ceiling moves with training. We grade the ladder emerging and explain what would make it supported.
Threshold can be estimated from ordinary rides if you carry the uncertainty along. We show how narrow the range gets, and how many rides it takes.
What a short check-in can and cannot see, and why the seven-day balance stays graded low until our own validation is done.
Piecewise decay of threshold and fuel storage after time off, and the return plan that follows from it, as defaults rather than destinies.
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