A reading list
on going long.
Trial data, sports-medical case notes, translations, and the physiology of going long. Drawn from the work behind the pouch. For the brand essay, see The Science.
Anserine vs beta-alanine: the carnosinase argument
Two molecules, two time scales, one liver enzyme. Beta-alanine works chronically; anserine works acutely. The single methyl group explains the entire commercial split.
What to take 40 minutes before a marathon
The pre-race window is a convergence of pharmacokinetic curves: gastric emptying, caffeine peak, anserine absorption, hydration equilibrium. Most of the discipline is what not to.
Lactic acid breakdown power: the bonito-peptide treadmill study
Five professional running coaches, seven stages, with and without bonito peptide. Blood lactate fell at every measured intensity.
A single subject, two tests, weeks apart — what the heart rate says
Yokohama Sports Medical Center follow-up on Umehara Nozomi. Lower heart rate at every stage; LT pace HR fell from 154 to 121 bpm.
Why lactate is 15× the energy of glycogen — and what to do about it
A reading of Prof. Hideo Hatta’s exercise-physiology work. Lactate is not waste; it is unspent fuel. The brief: clear it, convert it, keep moving.
The fish that never stops: why we work with wild skipjack
Bonito swim their entire lives at speeds up to 60 mph. Their muscle chemistry has spent millennia answering the same question runners ask in hour three.
On not putting caffeine in the pouch
A single active, intentionally. Why Katsuo Stamina is deliberately stimulant-free, and the case against stacking.
Reading kaiyū-gyo — the migratory fish, as a brief
A short essay on the Japanese cultural framing — 回遊魚のパワー — that shaped the formulation.