The honest answers

No. EnduranceProof is educational — we look into performance claims and explain what the evidence shows. We're not your coach, dietitian or doctor, and nothing here is a training plan or personal advice. Before you change how you train, eat or recover — especially with a health condition — talk to a qualified professional. More in the disclaimer on our About page.

One person, who spent years reading endurance research and got tired of watching it turned into marketing. There's no name or face on the site on purpose — it keeps the focus on the work and the sources, and means there's no employer or sponsor to keep happy. Judge it by whether it holds up, not by whose name is on it. The About page has the longer version.

No — none of it, ever. No sponsors, no affiliate links, no test shoes that quietly never go back. In a sport where most "reviews" are paid for one way or another, that independence is the whole product. If we ever can't stay independent, we'll stop before we compromise it.

We go for the things that get talked about most and looked into least — the promises loud enough to sell shoes but rarely examined honestly. And you get a vote: every deep-dive has a poll for what's next, and you can always reply or message us with the claim that's been bugging you. See what's in the queue on The checks.

The slow way, every time: start with the claim as it's sold, find all the research (not just the flattering studies), weigh how good it really is, separate the lab number from what happens on the road, and say how sure we are — out loud, including "not very." Every number comes with its source, so you can check us. Walk through it on the About page or see it in action on the super-shoes deep-dive.

One email when a new deep-dive is done — that's it. No weekly newsletter, no filler to stay top of mind. Quiet weeks just mean there's nothing worth your time yet. One click unsubscribes you, any time, no hard feelings.

Running, cycling, swimming, triathlon and trail & ultra — and a lot of what we look into (fuelling, caffeine, recovery, training methods) applies to every endurance athlete. You can filter The checks by sport or topic, but you don't have to.

Then we fix it — in public, with the date on it. Changing our minds when the evidence changes is the whole point of working this way; a write-up is a snapshot of what holds up today, not a monument. Spot a mistake? Tell us and we'll look again.

It's free to read. If that ever changes, the checks themselves stay readable — we're not here to lock evidence behind a subscription. The only thing we'll ever ask for is your email, and only so you don't miss the next one.

Please do. Vote in the poll on any deep-dive, email info@enduranceproof.com, message @EnduranceProof_ on X, or reply to any email you get from us. Reader requests genuinely move things up the queue.