A paddler on flat water at sunset

The reader vault

Against the Current

The pages behind the book.

Every figure, every source, every blood test range the book points at. You scanned the code on the back cover. This is what it opens.

Is this book for you?

A list of common questions sits on the left. Press one and the book answers it, in the book's own words, on the right. No form, no email, no score.

Coming soon

Ten common questions, answered in the book's own words.

Tell me where it lost you

The next edition gets written from what you say here. Nothing about your body. No blood work, no numbers, no conditions.

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