If you haven’t heard of Bryan Johnson or watched the new Netflix documentary about him, Don’t Die: The Man Who Wants to Live Forever, Bryan is a person who has given his life—and his body—over to the science of longevity. That means that he has essentially turned himself into a human lab rat, undergoing hundreds of tests and studies on every human marker imaginable in order to discover the best ways to stop the process of human aging.

What he’s found is unconventional, to say the least: He eats dinner at 11 a.m., he has swapped blood with his 17-year-old son, and he measures his nighttime erection lengths—just to name a few of the hundreds of things that you probably have never heard of a person doing in the name of health and longevity.

But it’s not just that Bryan wants to reverse aging and live forever. He also thinks we’re at the bleeding edge of a new kind of reality. He believes he’s akin to Amelia Earhart or Ernest Shackleton, and that he’s on the frontier of something big—something that will change everything about humanity as we know it.

In that way, this conversation is not just about wacky exercise routines and unusual supplements. It’s a philosophical discussion about the meaning and purpose of life, and what we’re all doing here on this planet.

Today on Honestly, Bryan Johnson tells us about why and how he’s not going to die.

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