Paths, practice and a progress record

Learn.

A calculator answers one question and you leave. These are for actually understanding something: short ordered routes through pages that already exist, and a game that trains the one skill that transfers — telling strong evidence from a claim that is merely sold hard.

Start here

12 tracks

Guided tracks

Five to seven steps, 25 to 40 minutes, ending in a check. Built from pages you can read for free anyway — the value is the order.

391 claims

Grade the Claim

We show you a health claim. You say how strong the evidence is. We show you what it actually is, and why.

Your record

What you know

Claims answered, topics you're weakest on, and what's due to come back round. The counterpart to Your numbers.

Everything worth reading

8 shelves

The lookup layer. Educational, evidence-tiered, non-promotional.

  • Health sections

    12 topic sections, from sleep and stress to blood markers and longevity — the reading behind the numbers.

  • Exercises

    Form guides for 150 movements: how to do it, what goes wrong, what to swap it for.

  • Supplements

    Every supplement graded on the strength of its evidence, not on how hard it is marketed.

  • Recovery guides

    8 clusters on sleep, stress and getting back between sessions.

  • Glossary

    Short definitional pages for the vocabulary the rest of the site uses, including how to read evidence itself.

  • Peptides

    An evidence-tiered reference on the 26 peptides discussed in fitness. No dosing or protocols.

  • Performance-enhancing drugs

    A harm-first library covering 28 compounds. Education, never instruction. Age-restricted.

  • Index methodology

    How our composite indices are built and scored, which sources each coefficient comes from, and what they can't tell you.

Looking for the evidence-graded health sections? Health, graded covers sleep, metabolic health, gut health, longevity and more.