Stack Proof Guide
The Research Behind Real Results.
Calmer evenings. Sharper afternoons. Gut comfort that lets you stop bracing. A body that recovers between sessions. The peer-reviewed research behind each one, chapter by chapter. Fifty-five pages.
What's inside
Fifty-five pages. Four chapters. Every study cited.
Written for the version of you that wants to see the receipts before you keep paying.
Chapter 1 · the brain ingredient
What it does in plain language. The dose used in the studies we lean on. Three peer-reviewed trials, including one from 2024 with 120 adults. What the end of the first month tends to feel like.
Chapter 2 · the calm ingredient
How this one quiets the nervous system. The dose the trials matched. Three peer-reviewed studies. What stretch three usually reveals about your evenings.
Chapter 3 · the gut ingredient
Where it shows up first in the body. The dose used in the studies. Three peer-reviewed trials. What you'll start to feel by stretch two.
Chapter 4 · the protein layer
Why bovine and not the alternative. What the protein floor does for the skin and hair, the joints, the body's repair work. The 16 grams per scoop, in context.
Citation index
Every study referenced in the chapters, listed in one place with full citation. The page you screenshot when a friend asks for the proof.
"I sent the citation page to my sister-in-law. She's a nurse. She came back two days later and asked if she could buy a bag for herself."From the survey we ran
Why we wrote it
Most brands hand you a story. We thought you deserved the studies.
You're sipping the cup. Then a friend asks, "Does it really work?" Most brands hand you a marketing line. Then a second marketing line. We thought you deserved to see the studies themselves.
That's why this book exists. Fifty-five pages of plain-language summaries of the trials we lean on. Four chapters, one per ingredient category. Comparison notes on the ones we didn't put in the scoop and why. A citation index at the back so you can verify any claim in under a minute.
For the friend who asks if it really works. For the sister-in-law who's a nurse. For the version of you that wants to see the proof before you keep paying for the cup. Fifty-five pages, written so you can read them on the couch, free with any subscription.
Real questions
Answers before you ask.
Six things customers wrote in to ask before they bought.
No. The point of the book is to let you check our claims yourself. We list the study, the dose used, the year, the journal. You can verify in a search bar in under a minute.
Peer-reviewed journals, mostly 2024 to 2026. We picked human trials over test-tube studies whenever both were available. The citation index lists every one in full.
The chapters are written in plain language, the kind you'd read out loud to a friend. The science vocabulary stays in the footnotes and the citation index, not the body itself.
Human trials whenever possible. The few test-tube citations we kept are clearly labeled. Sample sizes, study durations, and outcome metrics are spelled out next to every claim, so you can judge for yourself.
Yes. We hope you do. If the citation page lands in your group chat or your sister's text thread, that's the book working the way we built it.
Yes. New editions go out free to anyone who bought a previous one. The research moves and so does this book.
01
Sent in an hour
Right to your inbox after you check out. PDF, plus a phone-friendly web copy.
02
Verifiable in a search bar
Every study is listed with the author, the journal, the year. Look up any claim from the cup.
03
Updated when the research moves
New editions go to anyone who bought a previous one. The studies move and so does this book.
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