The B.rad Podcast

In this episode, I talk about a couple of articles I saw recently about running in the heat—about heat acclimation and endurance training—that honestly kind of rubbed me the wrong way.

So alert runners: we need to have a talk about this. I start by reading an excerpt from one of these popular running websites and unpacking some of the flawed assumptions behind this kind of messaging.

You’ll hear me break down why...

I’m so excited to welcome Sean Brosnan to the B.rad podcast!

Sean is the author of Beyond Fast: How a Renegade Coach and His Unlikely High School Team Revolutionized Distance Running, written with Chris Lear and Andrew Grefe. And yes, it’s a book about running—about high school workouts, races, and championships—but it’s also so much more than that.

In this episode, you’ll hear Sean break do...

In this show, I share 40 mind-blowing assertions to recalibrate modern fitness philosophy, inspired by content in the book Born to Walk, written by me and Mark Sisson.

Walking is universally health-boosting, delivers excellent aerobic conditioning, stabilizes energy, mood, and appetite, and carries near zero overuse injury risk. In contrast, endurance running—even at a comfortable pace—is too physically stressful for th...

The foremost health authority, the contrarian, and voice of reason is spouting this level of misinformation, so I think it deserves the acronym: A-Y-F-K-M.

Dr. Layne Norton, internet health influencer and self-titled Truth Seeker and debunker, has delivered the single worst piece of fitness advice imaginable. There is no more potentially destructive message to convey besides telling people to push through fatigue, crappy workouts, ...

In this episode, I’m joined by Dr. John Douillard, a leading expert in Ayurvedic medicine and founder of LifeSpa.com.

I read his book Body, Mind, and Sport about 20 years ago, and it was one of the first books I found that combined breath work and movement. With over 40 years of experience, Dr. John blends ancient Ayurvedic wisdom with modern science to help people achieve lasting health, vitality, and longevity.

We talk...

In this episode, you’ll learn about the powerful role of friendship and connection in promoting physical, emotional, and even cognitive longevity.

I sit down with longtime (40 years long!) friends Christy and Ana from the Girl, Can You Talk? podcast to explore their BOND method—Be Open, Offer Invitations, Nurture Consistency, and Deepen Through Vulnerability—a simple, intentional approach...

Please enjoy a great conversation with my friend and sprinting mentor Cynthia Monteleone, coming to you all the way from the beautiful big island of Hawaii.

A Team USA world champion sprinter, Cynthia is also a highly trained metabolic health analytics practitioner who coaches numerous Olympic athletes and world champion masters-level athletes, and she goes deep into the nuances of what delivers peak performance and helps people ov...

In this episode, I go through my deep and fascinating experience with the Stride health optimization program.

You'll hear me walk through the six detailed reports from my DNA and microbiome testing—starting with the methylation report, where I had impaired efficiency in the folate cycle, methionine cycle, and BH4 cycle, and finally got a normal score in the transsulfuration pathway. I talk about the role of key nutrients like...

In this episode, I take a hard look at the glorification of obsessive training habits in elite sport, using Michael Phelps’ famous claims—like eating 10,000 calories a day and not missing a single day of training for six straight years—as a springboard for discussion.

You’ll learn how research from top performance labs has shown that these types of extreme regimens aren’t just unsustainable, but unnec...

During this episode, I talk to former firefighter and chief breath officer of Jaspr, Wes Greenwood, about the unseen world of air quality and what’s really in the air we breathe—both indoors and out.

You’ll learn how air filters like the Jasper actually catch pollution, what particulate matter is, how cooking (even clean, grass-fed steak) produces airborne compounds, and how most kitchen range hoods are either und...

Please welcome Sasha Graham, the host of the Sports Will Save Us All podcast!

What a great name for a show, and I had a great time being a guest on it—we had a wide ranging conversation and really hit it off as she hit me with some surprise questions, trying to put me on the spot…it was wonderful that I said, you know what—how about I bring you onto the B.rad podcast? We turned the tables and while I didn&rs...

I welcome bestselling author Ben Azadi to the show on the occasion of the release of his new book called Metabolic Freedom: A 30-Day Guide to Restore Your Metabolism, Heal Hormones & Burn Fat.

Of course, we get into all the important talking points about the ketogenic diet, intermittent fasting, how to lose body fat safely and sensibly, but this show is also going to be way more than you bargained for, because we got into a ni...

In this episode, I share my full DEXA scan results, including a visceral fat score of 0.38 pounds, which I’m determined to drop to “0.0 fricking zero” through sprinting—shown in research to preferentially burn visceral fat.

My body fat is 21 pounds (12.5%), and I break down the fat and lean mass distribution throughout my body, including minor asymmetries. I was advised to gain 2–3 pounds of muscle for...

In this episode, I sit down with my go-to expert for all things sports performance and injury recovery—Dr. Jonathan Sanburg, a highly respected physical therapist who’s changing the game when it comes to getting people back to peak performance.

We dive into what’s truly cutting-edge in the industry right now: treating injuries from a fitness and athletic performance lens, instead of the o...

This show was inspired by a very thoughtful question from a college-aged listener named Justin who wanted to know what my current training regimen is like, and if I believe zone two training is really necessary, if VO two max workouts are really necessary, and if I think he should just take up a sprinting regimen (since the sprinters seem to look the best and be the healthiest)?

Thanks, Justin, for teeing me up—I thought his ...

In this episode, I break down the pros and cons of the popular practice of consuming energy bars as a supposedly nutritious snack on the go.

The inspiration for this show was an exciting spicy battle between health experts Dr. Layne Norton and Gary Brecka on Instagram, where they debated the merits of the new David High Protein bar. I talk about the ingredients in these bars, the processing methods, and the overall sketchy nature o...

Welcome to class!

In this episode, we dive into the B.rad Nutrition Guide—a simple, practical, and totally free resource you can download at bradkearns.com. Print it out in full color, stick it on your fridge, and use this tiered ranking system to navigate the world’s most nutritious foods with ease. It’s really this simple: ditch the processed junk and aim for maximum dietary nutrient density. At the very top? Me...

Welcome to another show about the big toe (hopefully you heard the first presentation, What’s the Big Deal About the Big Toe?) because in this episode, we’re taking it further.

You will learn why your big toe is crucial for efficient movement, and how its functionality influences everything from your running stride to balance. I reveal how wearing tight, restrictive shoes can hinder your big toe’s ability to funct...

In this episode, you will learn about the critical role the big toe plays in human movement and athletic performance.

I reveal the truth about how shoes can weaken and restrict your big toe, leading to imbalances and a higher risk of injury, especially as we age. You'll hear how the big toe impacts everything from balance to the activation of your glutes, which are essential for powerful movement.

I’ll also guide you through ...