Habits and Hustle
Episode 432: Kris Gethin: The Natural Blueprint for Building Muscle After 40
14 Mar 2025
Can you build muscle naturally as you age? In this week’s Fitness Friday episode, I talk with fitness expert Kris Gethin, as he reveals that declining testosterone may be the hidden culprit behind your struggle to maintain muscle mass after 40. Most middle-aged fitness enthusiasts who maintain impressive physiques rely heavily on hormone replacement therapy (HRT), but Kris shares a completely natural approach that works. We discuss surprising testosterone-killers lurking in your daily environment—from cooking with Teflon to the metal fillings in your teeth—and provide practical, scientifically-backed strategies to boost your hormone production naturally. We also dive into cutting-edge biohacking techniques like red light therapy, ice baths, and even how dental work dramatically improved Kris's own hormone levels after suffering from long COVID. Kris Gethin, a renowned transformation expert and entrepreneur, has revolutionized the fitness industry with his no-nonsense, results-driven approach to bodybuilding and coaching. As the founder of Unmatched Supps and former CEO of Kaged Muscle, he has established himself as a pioneering force in the supplement industry while developing the innovative DTP (Dramatic Transformation Principle) training method. Through his podcast, he shares evidence-based fitness insights with a global audience, drawing from his extensive experience coaching elite athletes and celebrities. What we discuss: Natural testosterone optimization vs. HRT dependency Environmental testosterone killers Compound exercises that stimulate hormone production Red light therapy benefits and application techniques How ice baths and saunas can elevate testosterone levels Unexpected connection between dental health and hormone production Natural alternatives to Ozempic and GLP-1 medications for fat loss Supplements that support testosterone (vitamin D with K2, creatine, progesterone, DHEA) Blood sugar stabilization techniques for maintaining muscle and losing fat Thank you to our sponsor: Therasage: Head over to therasage.com and use code Be Bold for 15% off TruNiagen: Head over to truniagen.com and use code HUSTLE20 to get $20 off any purchase over $100. Magic Mind: Head over to www.magicmind.com/jen and use code Jen at checkout. Air Doctor: Go to airdoctorpro.com and use promo code HUSTLE for up to $300 off and a 3-year warranty on air purifiers. Bio.me: Link to daily prebiotic fiber here, code Jennifer20 for 20% off. Momentous: Shop this link and use code Jen for 20% off To learn more about Kris Gethin: Website: https://www.krisgethin.com/ Instagram: https://www.instagram.com/krisgethin/ Youtube: https://www.youtube.com/krisgethin Find more from Jen: Website: https://www.jennifercohen.com/ Instagram: @therealjencohen Books: https://www.jennifercohen.com/books Speaking: https://www.jennifercohen.com/speaking-engagements
Full Episode
Hi guys, it's Tony Robbins. You're listening to Habits & Hustle. Crush it! Hey friends, you're listening to Fitness Friday on the Habits & Hustle podcast where myself and my friends share quick and very actionable advice for you becoming your healthiest self. So stay tuned and let me know how you leveled up. Before we dive into today's episode, I want to thank our sponsor, Momentus.
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I used to be super muscular, all right? And then as I'm beginning, as I get older, and I've worked out like a phenom forever, like since I was like in my teens, right? And so my body is adapted so well to that. But as you get older, the same things that worked when you were 20 or 25 don't necessarily have the same effects it has when you're 40, 45, 50, right?
How do people as they're like middle-aged maintain and also still build muscle and look the same like you? Like you're 50 years old and you're still ripped. And I'm presuming you're not on any steroids since you are natural. No, HRT, nothing like that. Not even HRT? No.
Because what I was going to actually ask you, and I didn't want to be rude, but now that you mentioned it, most of the people I know who are in their middle age, like 45, 50, even 55, whatever, who look really muscular, they're on... a lot of HRT. They're on testosterone. They're cycling a lot of other HGH. They're doing a lot of peptides.
They're really doing a lot of injectable things to kind of get, really to kind of get them to that place where they can really lean out. How do we do it naturally?
Okay. Well, that's a very open-ended question. So the one thing that I really focus on is, uh, you know, there's a lot of estrogenics in our society, you know, estrogen mimickers, you know, we could be cooking with Teflon. We could be utilizing the microwave. We could be open ourselves to a lot of EMF. Some people are more electrosensitive than others. You know, there's plastics.
People are utilizing plastics all the time. They're eating out of plastics. And then obviously it can be in our water. So always look at people's air, water, and their environment to ensure that, okay, the skincare products that you're using, the hair products, the laundry detergents, Is it natural or is it synthetic? Have they got estrogen mimickers in there?
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