Bryan Johnson, 49, posts 51-day dunk training gains: 37% faster ground contact, 87% reactive strength
VoidStateKate · x · 2026-09-12
Longevity figure Bryan Johnson shared 51 days of dunk-training data: ground contact time down 37% (267ms to 167ms), reactive strength up 87%, knee valgus under impact reduced 45%, and muscular braking converted to achilles tendon recoil. At 49, he says he's training to dunk for the first time in his life. The retweeter jokes that he's "solving skedaddling."
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