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Can ketones really enhance your performance? We tested them for a month to find out

Ketones boost endurance performance and accelerate recovery – those are the claims, anyway. We examined them with our own vigorous testing

By Nick Busca

Photography by Getty Images; SWpix

11 MAY 2022 | UPDATED 11.43 PM BST

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Rouleur Issue 144 — The Tour Issue
In printIssue 144

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The Tour Issue

Le Tour de France: a race defined by colour, passion and history, whose drama and romance continue to shape the identity of cycling’s greatest stage.