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Habits and Hustle

Episode 493: Ben Greenfield: How to Actually Look 20 Years Younger + His Most Extreme Biohacks Revealed

Habits and Hustle

Jen Cohen

Education, Health & Fitness, Business, Self-improvement, Entrepreneurship

4.4 • 800 Ratings

🗓️ 14 October 2025

⏱️ 102 minutes

🧾️ Download transcript

Summary

What happens when biohacking's biggest evangelist spends $40,000 replacing his blood with young plasma? In this episode of Habits and Hustle, I sit down with Ben Greenfield, the ultimate biohacker and author of "Boundless," for a deep dive into the science of optimization.  We discuss the real science behind fat loss, his daily skincare routine that keeps him looking decades younger, and why he believes faith is just as important as physical optimization. We also dive into his controversial take on GLP-1 microdosing, why the 12-3-30 treadmill trend is overrated, and how he went from extreme experimenter to finding balance between optimization and spirituality. Ben Greenfield is a biohacker, human performance consultant, and New York Times bestselling author. He's one of the world's leading experts on performance, recovery, sleep, digestion, brain optimization, and anti-aging. His revised book "Boundless" is considered the encyclopedia of health optimization. What We Discuss:  (04:00) Why most people need digestive enzymes after 40 and how they unlock nutrients (18:00) Cold plunging for women: What the research actually shows  (36:00) The 12-3-30 treadmill trend: Why it's overrated for body composition  (51:00) GLP-1 agonists: Why microdosing might be the future of appetite control  (1:05:00) The plasma replacement therapy that cost $40K but made him feel "unstoppable" (1:27:00) Faith, forgiveness, and finding purpose beyond biohacking  (1:37:00) His anti-aging skincare routine that keeps him looking decades younger  …and more! Thank you to our sponsors: Therasage: Head over to therasage.com and use code Be Bold for 15% off  Air Doctor: Go to airdoctorpro.com and use promo code HUSTLE for up to $300 off and a 3-year warranty on air purifiers. Magic Mind: Head over to www.magicmind.com/jen and use code Jen at checkout. Momentous: Shop this link and use code Jen for 20% off  Manna Vitality: Visit mannavitality.com and use code JENNIFER20 for 20% off your order  Prolon: Get 30% off sitewide plus a $40 bonus gift when you subscribe to their 5-Day Program! Just visit https://prolonlife.com/JENNIFERCOHEN and use code JENNIFERCOHEN to claim your discount and your bonus gift. Find more from Jen:  Website: https://www.jennifercohen.com/ Instagram: @therealjencohen   Books: https://www.jennifercohen.com/books Speaking: https://www.jennifercohen.com/speaking-engagement Find more from Ben Greenfield:  Instagram: https://www.instagram.com/bengreenfieldfitness/  Website:  https://boundlessbook.com/

Transcript

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0:00.0

Hi, guys. It's Tony Robbins. You're listening to Habits and Hustle. Crush it.

0:07.2

Ben Greenfield is one of a kind. He's back on the show. He is literally the most unique human I've ever, one of the most unique humans I've ever met. Oh, you're doing my shot.

0:16.5

And there's always these weird cocktails at your house. This is better than that. This, this tastes like somebody peed in the cat. I don't know what that is. You just took it from my fridge. These are performance shots. These are good. You've never had that. This really have to keep me up till 2 a.m. No, I actually have seen these before. They're adaptogens. Yeah. And they're, and they're really help with, I mean, I take them before I work out. They're great for performance, but they're also great for mental focus and stress and blah, blah, blah. But I figured we do this, we usually, what we normally do, if you don't remember, we usually take a shot together, like a healthy performance shot. It's only been 30 seconds. It's a took a shot. So if you take yours now, we still I know.. I know. We're supposed to, like, clink it and then drink it.

0:54.2

There's still a little bit left in the bottom of mine.

0:55.8

But I'll tell you why I'm not doing it because I just did one like 45 minutes ago.

1:08.8

And I think there's a maximum of how many I should probably take in a day. So I'm not going to do my shot today because it's so late. They're adaptogens. That's what the name means. Your body just adapts. It'll be fine.

1:12.5

Even with 50 grams of? Okay, well, I can do a little bit so we can click it. I mean, I'm kind of joking and kind of not. Like the definition of an adaptogen is something that will kind of turn up your nervous system if it needs an excitatory stimuli and turn it down if it needs an inhibitory stimuli. So an adaptogen is safer to use at night than like a pure central nervous system stimulant, like caffeine.

1:30.2

Your brain is, were you always like this?

1:33.1

Like, how do you remember and like spew information at a pace that is a clip that is not human?

1:40.6

Like, how do you contain all this?

1:43.0

A, by being mostly stupid about most things in the world except health, and then B, by doing what I think I first read in Arthur Conan Doyle's

1:51.8

Sherlock Holmes book, where Watson meets Sherlock Holmes. And Sherlock Holmes is going to try to forget Watson's name as soon as possible because he doesn't want stuff cluttering up his brain.

2:08.4

And so I try to write stuff down all the time and get ruminating thoughts out of my brain as quickly as possible.

2:13.0

And so I try to tell myself that I have a clearer, cleaner head because of that.

2:16.6

But it's like the retention, because I want to ask you a question.

2:24.7

I'm not even sure if you can answer this, but because you retain, though, so much information in detail.

2:31.2

It's not even just like, you know, most people or most people, like, they can kind of like keep a couple of little elements of something.

2:35.5

But if I know when I talk with you or interview or whatever,

2:41.2

I guess I have to say one word, like, and you can kind of like rattle on everything up and down,

2:47.6

sideways. Is there a way that someone can work? Is there like actually some kind of methodology where we can become more? Some kind of limitless smart drug?

2:51.3

Yeah.

2:51.8

Besides an IV and magic mind?

...

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