4.6 • 5.2K Ratings
🗓️ 26 June 2025
⏱️ 81 minutes
🧾️ Download transcript
A few years ago, Jeff Krasno thought he was pretty healthy...
Though he suffered from brain fog, chronic fatigue, and bouts of insomnia, those symptoms seemed utterly normal in today’s society. When he learned he had diabetes, his first thought was, "How can that be? I run a wellness company!"
His diagnosis propelled him to consult every expert at his disposal and engage in an intensive “me-search” to turn his health around. On this journey, he began to form a larger picture of what’s wrong with health in the modern world.
In his new book Good Stress (co-authored with his wife, Schuyler Grant, who shepherded him through 300-plus interviews with doctors and helped distill the results into actionable information) Jeff shares what he’s learned and outlines a practical program for readers to reset their own health—and in today's podcast we unpack it all.
Jeff explains that the comforts and conveniences of modern life in the developed world undermine human biology. People evolved with Paleolithic stressors and scarcity, which conferred health and resilience.
Modern life sets you up for diabetes, dementia, heart disease, cancer, and more. Chronic disease is the result of chronic ease: an endless abundance of calories, sedentary desk jobs, exposure to blue light, and separation from nature. To come back into balance, you need to thoughtfully subject your body and mind to the stressors you’re naturally built for.
Full show notes: https://bengreenfieldlife.com/goodstress
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0:00.0 | My name is Ben Greenfield, and on this episode of the Boundless Life podcast, what I found was |
0:06.5 | that if I jumped into a cold plunge, before I ate my first bite of food, it had really an |
0:16.8 | accelerating weight loss response and a really good blood sugar management response. |
0:23.7 | I was also fasted for 15 and a half hours, let's say. |
0:27.4 | So that was also going to reduce my amount of serum glucose, right? |
0:31.0 | And then before I took my first bite of food, I would get into a cold plunge. |
0:35.0 | So what would happen at that juncture is my core body temperature |
0:38.4 | would plummet. And my body is engineered for homeostasis. It's engineered for thermogenesis |
0:43.7 | to pull my body temperature back up into that little 98.6 Goldilocks zone. But it would have to make |
0:50.2 | heat to do that. And in order to make heat, it needed an energy substrate. My mitochondria needed |
0:56.4 | to look around and find something to make heat with. And because my blood glucose was low, it only had |
1:03.3 | one option, which was to oxidize fat and use those free fatty acids for energy production to make |
1:10.4 | heat. |
1:16.7 | I think I lost 65 pounds in about four months with that little stack. |
1:21.4 | Welcome to the boundless life with me, your host, Ben Greenfield. |
1:25.1 | I'm a personal trainer, exercise physiologist, and nutritionist, |
1:28.7 | and I'm passionate about helping you discover unparalleled levels of health, fitness, longevity, and beyond. |
1:38.0 | All right, it's official. I'm coming to Melbourne, Australia. I'll be there for a couple |
1:43.2 | weeks, but as a part of this tour, |
1:45.1 | I will be hosting a fantastic public event, one epic night at Luminar in South Melbourne, |
1:51.6 | with the team from St. Haven Private Club. Whether you're into health, performance, longevity, |
1:58.0 | fitness, or any other element of life optimization, I will teach you how to become |
... |
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