.@​bryan johnson believes wound healing could be a useful biomarker for biological age because it's difficult to "optimize your way out of it." "It's a pure representation of capacity. You can lift weights in the gym. But what does your body function by defaul

.@​bryan johnson believes wound healing could be a useful biomarker for biological age because it's difficult to "optimize your way out of it." "It's a pure representation of capacity. You can lift weights in the gym. But what does your body function by default?" "This is why I measure nighttime erections. You can do nothing about it. You go to sleep. It happens or it doesn't." "It's probably a good biomarker. I should initiate some cuts." ▻