Habits and Hustle
Episode 487: Mark Sisson: How to Look 40 at 70 (The Real Secrets Behind His Age-Defying Body)
26 Sep 2025
Listen to the full episode: https://www.youtube.com/watch?v=_XENYK73THs At 70, Mark Sisson looks better than most people half his age. In this Fitness Friday episode, I’m sharing an excerpt from our conversation where he shares the counterintuitive strategies that kept him injury-free and thriving while his endurance athlete peers broke down. We dive into the concept of metabolic flexibility, why he's now on a "campaign to eradicate running" and believes walking is the single best thing humans can do for themselves, and the “eat to live” mindset that can change your relationship with food. Mark Sisson is the OG of the ancestral health movement, creator of the Primal Blueprint, and founder of Primal Kitchen (sold to Kraft Heinz). His newsletter Mark's Daily Apple has been teaching people how to optimize their health since 2006, making him one of the earliest voices in what's now a massive wellness industry. What we discuss: Why Mark Looks Decades Younger Than His 70 Years The Injury That Changed Everything and Led to His Anti-Running Philosophy What Metabolic Flexibility Really Means (And Why He Popularized the Term) How to Access Any Energy Source Your Body Needs at Any Time The "Eat to Live vs Live to Eat" Mindset That Transformed His Relationship with Food How Orthotics Actually Weaken Your Feet Instead of Helping Them Why Modern Medicine Treats Symptoms Instead of Root Causes 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. 99designs by Vista: 99designs.com/jen20 – click "Claim my discount" to get $20 off your first design contest. Momentous: Shop this link and use code Jen for 20% off 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 Mark Sisson: Instagram: @marksissonprimal Blog: MarksDailyApple.com 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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Mark, just quickly, is the OG in the health and wellness space, in my opinion. As an entrepreneur, he had this thing called the Daily Apple. You still have it, by the way. Yeah. It's not like it's gone. Right. But it started in 2006, which makes it almost like it's… 17 years old. Yeah, 17. And still one of the best newsletters that I've ever read. Thank you. You're welcome.
And Primal Kitchen, which is in my kitchen right now. So I'm just going right for the jugular. You look so… Good. How old are you? I just turned 70. You just turned 70. Okay. You look like you're like 40. Your body is insane. What are you doing? I want to know everything. I want that. I want to know what your routine is, what your regimen is.
You know, it's some genetics. Okay. You know, you cannot discount that. I've been athletic my whole life. So I started a routine, a habit of working out daily. in my early teens. It started with running, but I also started lifting weights in my teens. I've always been competitive.
So the level of my athletics was, was such that I would be forced to dig deep and, you know, find the pain cave and all of the things they talk about right now. I chose to be an endurance athlete. So I chose to first of all, I was a marathon runner in the seventies, quite a good one. And from there, I got injured after seven years of, of overtraining and beating myself up doing that.
So I, I, I switched to triathlon. And so my first triathlon ever was Ironman in Hawaii in 1981. I went fourth in the 82 Hawaii Ironman. So I've always somehow been associated with a type of workout that is basically managing discomfort. You know, some people will play soccer and basketball or I now play, you know, Frisbee, ultimate Frisbee.
But in those days, I was just managing discomfort every day. How deep a hole can I dig for myself?
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