Bryan Johnson· Author
2. Final caffeine by noon.
The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
2. Final caffeine by noon.
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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.
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caffeine shifts the circadian clock by 45 minutes so if you're drinking a cup of coffee that's 45 minutes of a cc circadian shift and then you have another cup of coffee that's 45 minutes of a circadian shift right and so you're going to be going to bed hours later if you're drinking four cups of coffee particularly if it's you know afternoon