Every metric in Veyro stands on established concepts from sports and sleep science. We show them here — openly, with sources, without giving away our recipe.
Your HRV is comparable to nobody but yourself. Veyro compares every night against your own corridor from recent weeks — as HRV research has recommended since the Task Force standards.
Awake, light, deep and REM sleep follow the classification used in sleep medicine (AASM). Your sleep need is recalculated daily — baseline plus strain plus sleep debt.
The strain scale builds on heart-rate-reserve models (Karvonen, TRIMP); training guidance uses the ratio of acute to chronic load — qualitatively, as sports science describes it.
Chronotype and social jetlag follow the concepts of chronobiology (MCTQ, Roenneberg); your inner clock is estimated from your real rhythms — right on the device.
Food quality is anchored in established dietary indices such as the AHEI — food groups instead of calorie counting.
The exact weighting of our models is part of Veyro’s own calculation base — the concepts behind it are shown here in full.
Every statement in Veyro goes through the same process:
Every core statement is written down explicitly — including the numbers.
We look for primary sources: guidelines, meta-analyses, large cohort studies.
Then we actively try to refute the claim — adversarial, not confirmatory.
Supported, uncertain or untenable: only supported claims stay; uncertain ones get softened or cut.
Single days are noisy, baselines need nights of data, and no algorithm replaces medical diagnostics. Veyro would rather show no value than a wrong one — and tells you openly where the limits are.