Bryan Johnson· Author
when you apply these things to your head you can uh rub your scalp for a minute or two it increases blood flow which also is helpful for hair
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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 apply these things to your head you can uh rub your scalp for a minute or two it increases blood flow which also is helpful for hair
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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.
So, if you want to try to add this to the protocol again, I didn't do anything before to stimulate blood flow into my scalp, but it's actually enjoyable and a good practice with good evidence.