Why we exist

Everyone is selling an edge

Endurance sport runs on hope. That is its charm — the belief that with the right preparation, next season's you will be faster than this season's you. But hope is also a market. Sports nutrition, wearables, recovery tech and "faster" gear together form a multi-billion-euro industry, and its marketing has learned to speak the language of science: percentages, studies, "lab-tested", "proven".

Every one of those sentences sounds testable. That's the trick — and the opening. Because a promise that sounds testable can actually be tested.

Sports science is hard — and marketing knows it

Here's the uncomfortable part: even the honest research behind these promises is fragile. Not because scientists are careless, but because studying trained athletes is genuinely difficult.

Small groups, short experiments, measurements as jumpy as the effects they chase, and gear that can't be blinded — none of this is fraud. It's just hard science. The problem starts when one promising early experiment is repackaged as "scientifically proven" on the box. The nuance dies somewhere between the lab and the ad.

"Preliminary" is doing a lot of work in this industry — it just never makes it into the headline.

The real cost isn't only the money

An unproven gel or gadget costs you cash — annoying, survivable. The bigger cost is attention. Every hour spent optimising a 0.3% maybe-gain is an hour not spent on the things that boringly, overwhelmingly do work: consistent training, sleep, sensible fueling, patience. The basics don't trend, because nobody profits when you simply keep showing up.

That's the quiet damage of hype: it doesn't just sell you things that don't work — it makes the things that do work feel too obvious to bother with.

One thing at a time, done slowly

EnduranceProof takes the promises — about training methods, aerodynamics, gear and nutrition — and checks them the slow way. Not "we tried it for a week and felt great", but: find everything that's been done on it (all of it, not just the convenient ones), weigh how good they really are, and write down what's left when the marketing evaporates.

The answer is never just "works" or "doesn't". The questions that actually matter are: how well, for whom, at what cost — and how sure are we? A real effect that costs €300 per season and buys a trained athlete half a percent is a different story than a free habit with the same payoff.

The rules we won't bend

• No sponsors, no affiliates, no kickbacks. We don't sell shoes, powders or plans — in this industry, that independence is the product.
• We show our work. Everything comes with its sources, so you can go and see for yourself.
• "We don't know" is a real answer. Thin support gets called thin — in both directions. Absence of proof is not proof of absence.
• We change our minds when the facts do. Being wrong in public and correcting it is the whole point of working this way.
• We're here to inform, not to prescribe. We look into promises; we don't write your training plan or replace your doctor.