Andrew Huberman· PhD
by about age one that number of phases of sleep are starting to decrease but it's still highly polyphasic
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
by about age one that number of phases of sleep are starting to decrease but it's still highly polyphasic
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then perhaps by the time you're in kindergarten you may be down to just two sleeps so now we've switched from polyphasic sleep as infants to basic sleep as kindergarten
it's not not until you get to probably age two or three that now you're starting to see this consolidation of sleep what do I mean by that sleep is now happening more dominantly in the night phase of the 24-hour cycle and there a few abouts of sleep during the daytime
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