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.
So I think actually, it's more like a use it or lose it kind of a thing with the brain. The more you use a particular brain region or circuit, the more enhanced. It's like a muscle. The more you exercise it, the more healthier it is, the bigger it becomes and the more space it takes and the more you lose something else.
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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.
The phrase use it or lose it makes perfect sense to me. I mean, if you don't walk enough or run enough or cycle enough or do anything with your legs, eventually the the neural systems that control your legs will atrophy as will the muscles.