Editorial policy

Numbers come from code, not memory

Tables and worked examples in our articles are generated by running the same formulas that power our calculators. Each article names the calculator and method used, so you can reproduce every figure.

Sources

• We cite primary research, the original author of a method, or governing-body standards, and link them next to the claim they support.
• Every article ends with its source list. We do not cite other blogs as evidence.
• When evidence is weak or a method has known error, we say so in a Limitations section.

Use of AI

We use AI tools to help draft and edit text. AI is never the source of a number or a citation: figures are computed by our calculators, sources are opened and checked, and every article is reviewed by the editor before it is published.

Health topics

Articles about heart rate, VO₂ max, body weight, or nutrition describe published methods and population data. They are not diagnoses or individual prescriptions, and they point readers to qualified professionals where health conditions matter.

Independence

The site is funded by display ads and reader donations. We do not accept paid links, sponsored posts, or payment for rankings, and advertisers never see content before it is published.

Corrections

Report an error through our feedback form. Confirmed mistakes are corrected promptly and the article's “Updated” date reflects the change.