Health · Tools and reading
Sleep, breathing, caffeine, energy: free tools that calculate instead of guessing, with the formula, the source and the limits. No sign-up, no paywall.
Tools for orientation, not medical advice.
VerifiedVerification record (in German)
Sleep. Breath. Caffeine. Energy.
Tools · free
Every tool runs instantly in your browser. You enter only what the math needs, and you get the result, the formula, the source and the limits.
Reading
Sourced and in plain English. The full list lives on the articles page.
For every tool, before every update
A number is only as good as its check. That’s why nothing goes live here until it has been recalculated independently.
Every tool is built two times: once for the page, once as an independent reference.
Both versions run against each other on a large number of inputs. Every deviation shows up.
A tool that fails the check doesn’t go online. No exceptions.
The tools are not medical advice; where a result can only be a rough guide, the tool page says so. Responsible: Wild Garden Editorial Team.
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