Andrew Huberman· PhD
So it would be better off to get a three hour, like two-90 minute cycles, than a four hour batch of sleep because waking up in the middle of those ultradian cycles can just be brutal for parent and kid.
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The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
So it would be better off to get a three hour, like two-90 minute cycles, than a four hour batch of sleep because waking up in the middle of those ultradian cycles can just be brutal for parent and kid.
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There's a little bit of literature not a lot that shows that keeping the total amount of sleep per night to say six hours such that you begin sleep and end at the beginning and end of one of these ultradian cycles, can be better than waking up in the middle of one of these ultradian cycles.
Many people find it useful to set an alarm so that they wake up at the end of a 90 minute so-called ultradian cycle. There's some sleep apps that do this on the phone. I can't recall their names, but so rather than sleeping seven hours, you might be better off sleeping six or seven and a half hours, right? Waking up at the end of one of these 90 minute cycles. Try that.
you may have heard me talk about ultradian rhythms which are these 90-minute rhythms that break up our 24-hour day uh they help break up our sleep into different cycles of sleep like REM sleep and non-rem sleep and in waking States they help us um or I should say they U break up our day in ways that allow us to learn best within 90minut Cycles Etc
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