Editorial Standards

These are the rules every page on this site follows.

What we source from, in order

When we explain what a number means or what moves it, we look for the strongest evidence available. The order we prefer sources in, from systematic reviews down to manufacturer documentation, is set out once in our evidence standard, and every page follows that one list.

When the strongest evidence for a question is weak, or when good sources disagree, we say so in the article rather than picking the answer we like best.

Our claims policy

Stronger claims require stronger evidence. A confident statement in one of our articles should mean the evidence behind it is strong. When the research is preliminary, mixed, or based on small studies, we write it that way, with the uncertainty visible. We would rather tell you a question is unsettled than give you false confidence about your own body.

We also separate two things that are easy to blur: what a number is associated with, and what a number causes. Most wearable research shows associations. We try to be careful with that language, because "linked to" and "causes" are not the same thing, and the difference matters when you're reading your own data.

How we keep articles current

Research changes. When newer or stronger evidence changes a finding, the article is updated, and a correction that changes a finding is dated on the page.

When we get it wrong

If you spot an error, or think we've represented a study unfairly, write to us at corrections@knowyourprime.com.