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90-Minute Focus Blocks
Schedule focused work or learning in roughly 90-minute blocks, ideally during your personal peak alertness, and expect the first 5–10 minutes to be a warm-up before deep focus settles in. Stop when concentration starts to fade rather than pushing indefinitely, since these bouts align with natural ultradian rhythms and tend to support better sustained attention and learning efficiency.
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“If you're going to do something hard and you want to focus on it, limit it to 90 minutes or less. And I am one of those people who's also joined that conversation. And indeed, I use 90-minute work cycles.”
huberman · Time Perception, Memory & Focus | Huberman Lab Essentials · Oct 9, 2025 · 10:00 · open ↗
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