Century

How Century interprets wearable data

A transparent overview of the principles behind Century’s scores and editorial explanations.

Trends before isolated readings

Wearable measurements vary with device fit, sampling, sleep stage, movement, environment, and the algorithms used by each platform. Century emphasizes personal baselines and multi-day trends instead of treating one value as a verdict.

Signals depend on the connected source

Century can only interpret data a supported device or service makes available. Missing measurements, changed permissions, device upgrades, or irregular wear can affect scores and trends.

Wellness, not diagnosis

Recovery, sleep, health, effort, and biological-age outputs are wellness estimates. They are designed to support reflection and behavior—not diagnose illness or replace a clinician, laboratory test, or validated medical assessment.

Editorial evidence

Health explanations should link to primary research, official device documentation, or recognized clinical guidance. Articles show an expert-review label only when a named reviewer has completed that review.

Questions or corrections? Contact the Century team.

Century Methodology - Century