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.
how different states of sleep such as rapid eye movement sleep, which is associated with dreaming and high emotional content dreams versus slow wave sleep, which tends to be more focused on physical repair of the body, more mundane dreams, how those different states of mind during sleep relate to different aspects of metabolism
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
So the take home message here is that, as the author state, sleep and experiencing the different states of sleep, slow wave sleep early in the night, predominantly, plus rapid eye movement sleep toward the end of the night is extremely important for optimizing metabolic circuits for human performance and health.