Bryan Johnson· Author
Zone 2 or HIIT
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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.
Zone 2 or HIIT
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.
keeping my workout to 60 min a day now given the longer morning protocol. 30 min (strength, balance, flexibility) and 30 min cardio (zone 2 or HIIT)
I consistently do HIIT and also zone 2 cardio training weekly.
I'm trying to achieve being in zone two through four for my heart rate roughly four and a half hours per week