Asian Efficiency

Ultradian Rhythms: How 90-Minute Focus Blocks Changed Everything (TPS613)

May 18, 2026·41 min
Episode Description from the Publisher

Ever feel like your focus just disappears after an hour of work? It’s not laziness—it’s biology. In this episode, we dive deep into the science of ultradian rhythms and why the popular “90-minute focus block” is both powerful and often misunderstood. We’ll separate productivity mythology from real biology, showing you how to identify your own […]

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