Bryan Johnson· Author
+ 25 min of 4x4 high intensity interval training: peak exertion on an elliptical for 4 min and then rest 4 min, 4 times.
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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.
+ 25 min of 4x4 high intensity interval training: peak exertion on an elliptical for 4 min and then rest 4 min, 4 times.
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.
I do 4 min HIIT, 4 min rest (~130bpm), 4 times. 4x4, 3x/wk.
high intensity training 4x4 blueprint stack
For my 4x4 high intensity training (HIIT), I did 4 minutes of all out exertion on an elliptical followed by 4 minutes of rest. Do that four times.
+ high intensity interval training for 75 min wk
45 min: high intensity interval training
exercise an hour a day plus high intensity three times a week