Josh Blatchford: Your Body Knows You’re Injured a Month Before You Do. Most Runners Ignore It Until It’s Too Late

Dominic didn’t listen, and he’s the first to admit it.

Josh Blatchford, founder and CEO of Attuned, returns to The Running Effect to put Dom’s sub-three Columbus Marathon attempt on blast. Dom took five Endurance Scans, starting with one of the best scores Attuned has seen in November 2025. Four weeks before Columbus, an Achilles injury ended his race. Josh explains how Attuned’s pattern recognition flagged Dom’s lower leg and Achilles on August 22, weeks before he felt any pain. According to Josh, the training block wasn’t the problem. Dom neglected the foundation: his feet, his posterior chain, adrenals that were already shot, and the custom remedies he never took.

Then they zoom out to data from more than 600 runner scans. Seventy-six percent flag hydration and electrolyte balance as critical, which reopens Dom’s electrolyte debate with Riley Witt. Also, runners who report great sleep are 40% more likely to avoid a critical system. Josh also explains why all but one of the Attuned runners who missed their goal in Berlin had gut issues. 

He covers why a breakup stresses the body the same way a training block does, what carbon-plated shoes may be doing to the lower leg, and why so many athletes get their results and never act on them. He also makes an emotional plea for female runners struggling with RED-S.

It’s an honest, funny conversation between two friends who log miles together, and a reminder that your body starts talking long before it hurts.

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