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.
What you get is that mood boost very very consistent. You get um uh you get um improved prefrontal function typically uh tested with a stroop uh test which is a test that uh asks you to shift and focus your attention in specific ways. um it's a challenging task and clearly dependent on the prefrontal cortex largely and um significant improvements in reaction time.
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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.
One of the studies that I did publish in my lab showed that the immediate effects of exercise lasted up to two hours. Unfortunately, that was the longest that we last. They were still there at 2 hours.