Bryan Johnson measures his biological age across 70 organs using hundreds of metrics, not just counting years since birth. His answer to improving it: go to bed at the same time every night. Sleep consistency, he says, can dramatically change your wellbeing and biological age.
Chapters
How do we measure age? Well, there's your chronological age, which is when you were born. And there's your biological age, which you can look at throughout your entire body. We have endeavored to measure the biological age of each one of my 70 organs. My message to the world is that we choose to live. We live better, more expansive, and a more beautiful existence than we ever have in our entire lives. And we dare have the imagination to go after it. In the course of sharing hundreds of measurements I do on my body and all the protocols I get, the frequently asked question, what do I do? The answer is sleep. High quality sleep. Every single night. Go to bed at the same time. Prioritize sleep. Just get high quality sleep and your life will be changed.