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.
One of the most powerful ways to increase slow wave sleep, the percentage of slow wave sleep, apparently without any disruption to the other components of sleep and learning is to engage in resistance exercise. It's pretty clear that resistance exercise triggers a number of metabolic and endocrine pathways that lend themselves to release of growth hormone, which happens early in the night. And resistance exercise therefore can induce a greater percentage of slow wave sleep.
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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.
But resistance exercise, unlike aerobic exercise does seem to increase the amount of slow wave sleep, which as we know is involved in motor learning and the acquisition of fine detailed information not general rules, or the emotional components of experiences.