Ideas from books, articles & podcasts.
Your brain can only focus for 90 to 120 minutes before it needs a break.
This is the ultradian rhythm, a cycle that’s present in both our sleeping (the 90-minute cycles during which we progress through the five stages of sleep) and waking lives (as we move from higher to lower alertness).
MORE IDEAS FROM THE SAME ARTICLE
The 90-minute cycle works well for most of the demanding and creative work, as follows:
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