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What actually makes you faster.

Every season there's a new way to go faster: a shoe, a powder, a protocol, a number your watch has suddenly decided you should care about. Some of it works. A lot of it has never really been tested.

Here we take those promises one at a time, read what has actually been measured, and say plainly what came out of it — including the times the answer is boring. Running, cycling, triathlon and trail: training, aero, gear and fuelling.

No sponsors, no free gear. Every number on screen shows where it came from, and when something is our own estimate rather than a measurement, we say so.

Educational only — we're not your coach and definitely not your doctor.

A new video whenever a piece is finished. Everything, including the free calculators, lives at enduranceproof.com

a TimChecks project 
by @tim_checks