As I write this post, I am grimacing. My chest hasn't been this sore since back when I was doing more lifting (that's me above, a few days before I did my first triathlon and decided I had too much muscle to comfortably do cardio-style racing). Anyways, it's been six days since I've stepped foot [...]

As I write this post, I am grimacing. My chest hasn't been this sore since back when I was doing more lifting (that's me above, a few days before I did my first triathlon and decided I had too much muscle to comfortably do cardio-style racing). Anyways, it's been six days since I've stepped foot [...]
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Free fitness, nutrition, biohacking, fat loss, anti-aging and cutting-edge health advice from BenGreenfieldLife.com! Tune in to the latest research, interviews with exercise, diet and medical professionals, and an entertaining mash-up of ancestral wisdom and modern science, along with Q&A's and mind-body-spirit optimizing content from America's top personal trainer.

Boundless Life

As I write this post, I am grimacing. My chest hasn't been this sore since back when I was doing more lifting (that's me above, a few days before I did my first triathlon and decided I had too much muscle to comfortably do cardio-style racing)....

Does Weight Training Count As Cardio?

Full show notes: https://bengreenfieldlife.com/jimmypodcast 

In this episode with Jimmy St. Louis, you'll hear how a former NFL player, US Olympic rowing trials competitor, and four-time CrossFit regionals athlete built his career around defining the standard of care in longevity medicine. Jimmy shares the full arc of his path from a three-sport young athlete through three ACL tears, into a spine surgery business that performed 100,000 procedures, and then into Agentis Longevity, a company built around acquiring the best longevity clinics in the country and unifying them under one consistent set of protocols. You will also get a full breakdown of the Longevity Quotient, the five-test battery Agentis uses to score every new patient, and hear how Jimmy and I built a custom Agentis x Boundless protocol for my listeners.

Jimmy St. Louis is a healthcare entrepreneur, operator, and former elite athlete dedicated to driving the standard of personalized health, longevity, and regenerative medicine. He is the CEO of Agentis, a platform built to help people live healthier, happier, longer lives through best-in-class longevity treatments. He also serves as President of the Personalized Health Association, leading a national movement to advance regenerative and personalized healthcare through advocacy, education, and collaboration. A former NFL player and US Rowing Team member, Jimmy holds a B.S. in Business Administration, an MBA, and dual M.S. degrees in Finance and Telecommunications. 

Try the Agentis x Boundless Protocol

Book your LQ assessment, a $149 blood panel measuring over 60 biomarkers. Within five to seven days you'll get your Longevity Quotient, a single number from 0 to 99 quantifying how your body is aging compared to your peers, plus a personalized 12 week protocol built around your bloodwork. Labs can be drawn at home anywhere in the country or in-clinic at Arete in Nashville. No commitment to start, HSA/FSA eligible. 

Use code AGENTIS15 for 15% off at checkout.

Start your journey with Agentis Longevity here. 

Episode Sponsors:

BIOptimizers Magnesium Breakthrough: Seven essential forms of magnesium to help you relax, unwind, and wake up refreshed. Go to bioptimizers.com/ben and use code ben15 for 15% off.

Pendulum: Metabolic Daily is a multi-strain probiotic that improves metabolism, reduces sugar cravings, and sustains energy levels. Get 20% off your first month with code BEN at PendulumLife.com.

Anthros: A posture chair with a Precision Posture System at the pelvis and a built-in Clinical Posture Consult. Go to anthros.com and use code BEN for an exclusive $200 discount, risk-free for 60 days.

Young Goose: To experience the transformative power of Young Goose's cutting-edge skincare products, visit younggoose.com and use code BGF10 for 10% off your order.

Full show notes: <a href="https://bengreenfieldlife.com/jimmypodcast">https://bengreenfieldlife.com/jimmypodcast&nbsp;</a>
In this episode with <a href="https://www.linkedin.com/in/jimmy-st-louis/">Jimmy St. Louis</a>, you'll hear how a former NFL player, US Olympic rowing trials competitor, and four-time CrossFit regionals athlete built his career around defining the standard of care in longevity medicine. Jimmy shares the full arc of his path from a three-sport young athlete through three ACL tears, into a spine surgery business that performed 100,000 procedures, and then into <a href="http://agentislongevity.com/">Agentis Longevity</a>, a company built around acquiring the best longevity clinics in the country and unifying them under one consistent set of protocols. You will also get a full breakdown of the Longevity Quotient, the five-test battery <a href="http://agentislongevity.com/">Agentis</a> uses to score every new patient, and hear how Jimmy and I built a custom <a href="https://bengreenfieldlife.com/agentis-protocol">Agentis x Boundless</a> protocol for my listeners.
<a href="https://www.linkedin.com/in/jimmy-st-louis/">Jimmy St. Louis</a> is a healthcare entrepreneur, operator, and former elite athlete dedicated to driving the standard of personalized health, longevity, and regenerative medicine. He is the CEO of Agentis, a platform built to help people live healthier, happier, longer lives through best-in-class longevity treatments. He also serves as President of the Personalized Health Association, leading a national movement to advance regenerative and personalized healthcare through advocacy, education, and collaboration. A former NFL player and US Rowing Team member, Jimmy holds a B.S. in Business Administration, an MBA, and dual M.S. degrees in Finance and Telecommunications.&nbsp;
Try the Agentis x Boundless Protocol
<a href="https://bengreenfieldlife.com/agentis-protocol">Book your LQ assessment</a>, a $149 blood panel measuring over 60 biomarkers. Within five to seven days you'll get your Longevity Quotient, a single number from 0 to 99 quantifying how your body is aging compared to your peers, plus a personalized 12 week protocol built around your bloodwork. Labs can be drawn at home anywhere in the country or in-clinic at Arete in Nashville. No commitment to start, HSA/FSA eligible.&nbsp;
Use code AGENTIS15 for 15% off at checkout.
<a href="https://bengreenfieldlife.com/agentis-protocol">Start your journey with Agentis Longevity here.&nbsp;</a>
Episode Sponsors:
<a href="https://bioptimizers.com/ben">BIOptimizers Magnesium Breakthrough</a>: Seven essential forms of magnesium to help you relax, unwind, and wake up refreshed. Go to <a href="https://bioptimizers.com/ben">bioptimizers.com/ben</a> and use code ben15 for 15% off.
<a href="https://bengreenfieldlife.com/metabolicdaily">Pendulum</a>: Metabolic Daily is a multi-strain probiotic that improves metabolism, reduces sugar cravings, and sustains energy levels. Get 20% off your first month with code BEN at <a href="https://bengreenfieldlife.com/metabolicdaily">PendulumLife.com</a>.
<a href="https://bengreenfieldlife.com/anthros">Anthros</a>: A posture chair with a Precision Posture System at the pelvis and a built-in Clinical Posture Consult. Go to <a href="https://bengreenfieldlife.com/anthros">anthros.com</a> and use code BEN for an exclusive $200 discount, risk-free for 60 days.
<a href="https://bengreenfieldlife.com/younggoosepodcastads">Young Goose</a>: To experience the transformative power of Young Goose's cutting-edge skincare products, visit <a href="https://bengreenfieldlife.com/younggoosepodcastads">younggoose.com</a> and use code BGF10 for 10% off your order.

Could ONE Score Reveal How Fast You’re Aging? The Longevity Quotient & How a Former NFL Player Is Redefining The Standards of Longevity Medicine, With Jimmy St. Louis

Full show notes: https://bengreenfieldlife.com/bretthurt

In this episode with Brett Hurt, serial tech entrepreneur and author of Love Conquers Fear, you'll hear how he went from coding obsessively at seven to building one of the early internet's most popular games, surviving the dot-com bust, orchestrating two major exits, data.world to ServiceNow and Bazaarvoice's billion-dollar IPO, and experiencing a psychedelic awakening at 50 that redirected his entire life.

You will also hear his vision for what an Age of Abundance looks like in practice, from solar energy and robotics to brain-computer interfaces and the role AI might play in solving problems like clean water, food security, and healthcare access in places like Chad, and why Brett believes the single most important variable in whether AI helps or hurts humanity is whether the people building it are operating from love or from fear.

Brett Hurt is a tech entrepreneur and investor. He co-founded and led data.world, acquired by ServiceNow in July 2025, and previously co-founded Bazaarvoice and Coremetrics, acquired by IBM. Through his Love Conquers Fear holding company and podcast, he explores how AI and emerging technologies can either amplify fear or help create broad-based human flourishing.

Pick up a copy of Love Conquers Fear to discover how Brett crosses the streams of ancient wisdom and cutting-edge technology, rewiring humanity's relationship with AI, quantum computing, and emerging tech to move us from scarcity to abundance.

Episode Sponsors:

ZBiotics Pre-Alcohol Probiotic: The world's first genetically engineered probiotic that helps break down the toxic byproduct of alcohol. Order with a 100% money-back guarantee and 15% off your first order at zbiotics.com/BEN15.

JOYMODE: Visit tryjoymode.com/BEN or enter BEN at checkout for 20% off your first order.

Quantum Upgrade: Recent research revealed Quantum Upgrade increased ATP production by 20-25% in human cells. Unlock a 15-day free trial with code BEN15 at quantumupgrade.io.

Timeline: High-performance products powered by Mitopure, delivering a precise dose of the rare Urolithin A molecule for healthy aging. Mitopure starts at $79 at timeline.com/BEN.

Full show notes: <a href="https://bengreenfieldlife.com/bretthurt">https://bengreenfieldlife.com/bretthurt</a>
In this episode with <a href="https://www.linkedin.com/in/bretthurt/">Brett Hurt</a>, serial tech entrepreneur and author of <a href="http://loveconquersfear.org">Love Conquers Fear</a>, you'll hear how he went from coding obsessively at seven to building one of the early internet's most popular games, surviving the dot-com bust, orchestrating two major exits, <a href="http://data.world">data.world</a> to <a href="http://servicenow.com">ServiceNow</a> and <a href="http://bazaarvoice.com">Bazaarvoice</a>'s billion-dollar IPO, and experiencing a psychedelic awakening at 50 that redirected his entire life.
You will also hear his vision for what an <a href="http://medium.com/authority-magazine/brett-hurts-big-idea-that-might-change-the-world-7031c436951c">Age of Abundance</a> looks like in practice, from solar energy and robotics to brain-computer interfaces and the role AI might play in solving problems like clean water, food security, and healthcare access in places like Chad, and why Brett believes the single most important variable in whether AI helps or hurts humanity is whether the people building it are operating from love or from fear.
Brett Hurt is a tech entrepreneur and investor. He co-founded and led <a href="http://data.world">data.world</a>, acquired by <a href="http://servicenow.com">ServiceNow</a> in July 2025, and previously co-founded <a href="http://bazaarvoice.com">Bazaarvoice</a> and <a href="http://prnewswire.com/news-releases/ibm-advances-analytics-with-acquisition-of-coremetrics-96371044.html">Coremetrics</a>, acquired by IBM. Through his <a href="http://loveconquersfear.org">Love Conquers Fear</a> holding company and podcast, he explores how AI and emerging technologies can either amplify fear or help create broad-based human flourishing.
Pick up a copy of <a href="http://loveconquersfear.org">Love Conquers Fear</a> to discover how Brett crosses the streams of ancient wisdom and cutting-edge technology, rewiring humanity's relationship with AI, quantum computing, and emerging tech to move us from scarcity to abundance.
Episode Sponsors:
<a href="http://zbiotics.com/BEN">ZBiotics Pre-Alcohol Probiotic</a>: The world's first genetically engineered probiotic that helps break down the toxic byproduct of alcohol. Order with a 100% money-back guarantee and 15% off your first order at <a href="http://zbiotics.com/BEN15">zbiotics.com/BEN15</a>.
<a href="http://usejoymode.com/GREENFIELD">JOYMODE</a>: Visit <a href="http://tryjoymode.com/BEN">tryjoymode.com/BEN</a> or enter BEN at checkout for 20% off your first order.
<a href="http://quantumupgrade.io/">Quantum Upgrade</a>: Recent research revealed Quantum Upgrade increased ATP production by 20-25% in human cells. Unlock a 15-day free trial with code BEN15 at <a href="http://quantumupgrade.io">quantumupgrade.io</a>.
<a href="http://timeline.com/ben">Timeline</a>: High-performance products powered by Mitopure, delivering a precise dose of the rare Urolithin A molecule for healthy aging. Mitopure starts at $79 at <a href="http://timeline.com/BEN">timeline.com/BEN</a>.

What Will The Coming “Age Of Abundance” Look Like? (AI, Solar Power, Computer-Brain Interfaces, Robots & More!) With Brett Hurt.

Full show notes: https://bengreenfieldlife.com/tim2026

In this episode with repeat guest Tim Gray, you'll hear why the smartest biohackers are now removing more than they are adding, what paying attention to microplastics and environmental toxins in your own home and blood actually reveals, and why sulforaphane is making a comeback as a potential microplastic clearance tool. You'll also get a breakdown of the most interesting technologies coming to the Health Optimisation Summit this September, now in its first-ever three-day format, from hydrogen inhalation and bio-energy stimulation to hands-free vagus nerve stimulation, PEMF, STEMREGEN, and a full-body MRI trailer parked outside the venue. 

Tim Gray is the founder and CEO of the Health Optimisation Summit, one of the world's largest health and longevity events, now expanding to multiple international locations. Known globally as The Health Community Guy, he is also the host of the Health Optimisation Podcast, an early-stage investor in breakthrough wellness brands, and the founder of London's first private hyperbaric oxygen clinic.

Use code BEN for 10% off HOS registration at bengreenfieldlife.com/HOS2026. 

Episode Sponsors:

Manukora: Honey with superpowers. Head to manukora.com/ben or use code BEN to get $25 off your Starter Kit.

Troscriptions: A buccal troche delivery system that bypasses digestion to deliver pharmaceutical-grade compounds directly through your cheek mucosa for faster onset and higher bioavailability. Visit troscriptions.com/BEN or use code BEN for 10% off your first order.

Organifi Shilajit Gummies: Pure Himalayan Shilajit in a convenient gummy. Get 20% off at organifi.com/Ben.

Qualia Stem Cell: A science-backed supplement that supports your body's natural repair system by enhancing stem cell function, taken just four days per month. Visit qualialife.com/boundless and use code BOUNDLESS for 15% off.

Full show notes: <a href="https://bengreenfieldlife.com/tim2026">https://bengreenfieldlife.com/tim2026</a>
In this episode with repeat guest <a href="https://www.instagram.com/timbiohacker/?hl=en">Tim Gray</a>, you'll hear why the smartest biohackers are now removing more than they are adding, what paying attention to microplastics and environmental toxins in your own home and blood actually reveals, and why sulforaphane is making a comeback as a potential microplastic clearance tool. You'll also get a breakdown of the most interesting technologies coming to the <a href="https://bengreenfieldlife.com/HOS2026">Health Optimisation Summit</a> this September, now in its first-ever three-day format, from hydrogen inhalation and bio-energy stimulation to hands-free vagus nerve stimulation, PEMF, <a href="https://bengreenfieldlife.com/stemregen">STEMREGEN</a>, and a full-body MRI trailer parked outside the venue.&nbsp;
Tim Gray is the founder and CEO of the <a href="https://bengreenfieldlife.com/HOS2026">Health Optimisation Summit</a>, one of the world's largest health and longevity events, now expanding to multiple international locations. Known globally as The Health Community Guy, he is also the host of the Health Optimisation Podcast, an early-stage investor in breakthrough wellness brands, and the founder of London's first private hyperbaric oxygen clinic.
Use code BEN for 10% off HOS registration at <a href="https://bengreenfieldlife.com/HOS2026">bengreenfieldlife.com/HOS2026</a>.&nbsp;
Episode Sponsors:
<a href="http://manukora.com/ben">Manukora</a>: Honey with superpowers. Head to <a href="https://manukora.com/ben">manukora.com/ben</a> or use code BEN to get $25 off your Starter Kit.
<a href="http://troscriptions.com/BEN">Troscriptions</a>: A buccal troche delivery system that bypasses digestion to deliver pharmaceutical-grade compounds directly through your cheek mucosa for faster onset and higher bioavailability. Visit <a href="https://troscriptions.com/BEN">troscriptions.com/BEN</a> or use code BEN for 10% off your first order.
<a href="http://organifi.com/Ben">Organifi Shilajit Gummies</a>: Pure Himalayan Shilajit in a convenient gummy. Get 20% off at <a href="https://organifi.com/Ben">organifi.com/Ben</a>.
<a href="https://qualialife.com/boundless">Qualia Stem Cell</a>: A science-backed supplement that supports your body's natural repair system by enhancing stem cell function, taken just four days per month. Visit <a href="https://qualialife.com/boundless">qualialife.com/boundless </a>and use code BOUNDLESS for 15% off.

Does Weight Training Count As Cardio?

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