Bryan Johnson's resting heart rate dropped 6%, indicating improved cardiac efficiency.

“46 bpm resting heart rate”

“My heart recovers faster than 75% of elite athletes and 99% of the general population..”

“There's this specific regimen to generate max heart rate. I did that and got 183 And my previous high was 169. Which was what I couldn't exceed for about 18 months.”

“my resting heart rate had dropped 6% that's a sign that my heart is operating more efficiently and it's the kind of thing that you typically see in athletes”