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.
when you look up, you actually are engaging circuits in your brainstem that are involved in generating alertness. And when you look down and your eyes close, the opposite is true. You're engaging circuits in the brain that are taking you into a calmer state.
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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.
When things are up, we tend to be alert. When everything's focused down, including our eyes, it tends to have a more suppressive or seditive type signaling to the deeper centers of the brain.
If you are feeling tired, it actually can be beneficial to the wakefulness systems of the brain, including the locus ceruius and these areas that release norepinephrine to actually look up, to actually look up toward the ceiling. You don't want your chin all the way back, but to look up and to raise your eyes toward the ceiling and to look up and try and hold that for 10 to 15 seconds. It actually triggers some of the areas of the brain that are involved in wakefulness.