Bryan Johnson· Author
Heart Rate Variability (HRV) 54, age 40: "Let’s go race the mountain trail again!"
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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.
Heart Rate Variability (HRV) 54, age 40: "Let’s go race the mountain trail again!"
Every Sunday: the week’s new conflicts and verdict changes — and nothing else.
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.
now, of course, there are certain other factors that invariably go down. uh resting heart rate goes down, heart rate variability, pardon me, resting heart rate goes up, heart rate variability goes down.