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 peak windows, use deliberate recovery breaks, and adapt these blocks to fit your real life. Stop fighting your brain and start working with your natural energy cycles.

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