In this episode, I talk about the modern tendency to obsess over “science says…” posts—like the viral claim that slapping your quadriceps ten times will wake up your motor cortex, spike your stretch reflex, and increase vertical jump by 18% and sprint speed by 12%.

I describe why these numbers raised my hackles, walk through the reality of neural activation and theatrics we see from athletes like Karsten Warholm and Noah Lyles, and explain why a 12% speed boost would mean my 60-year-old 400-meter time drops from 60 seconds to 53.8, which is royal screaming BS. You’ll hear reactions from world-class masters sprinters like Lion Martinez and Cynthia Monteleone, and my reminder that most of these studies are done on minimally conditioned college kids getting paid $60—not real sprinters suddenly finding new superpowers.

I also broaden the discussion to our habit of oversimplifying fitness with VO₂ max numbers, zone-two worship, HRV scores, and morning heart rate, when the truth is much more nuanced. VO₂ max is highly constrained by genetics, zone two is overrated, and walking and zone one deliver tremendous aerobic benefits—just look at Eliud Kipchoge spending 83% of his training there.

I emphasize that intuitive readiness to train—your bounce, your warmup feel, your own voice—will always beat a wearable metric, and even the “best” performance booster (a gun to your head!) won’t give you a magical 12% sprint increase.

This show is all about using critical thinking, not getting intimidated by data, and remembering that nothing is more powerful than your own intuition.

 

TIMESTAMPS:

There is some validity to the idea of waking up the central nervous system and priming it for a peak explosive effort, but Brad has some problems with "facts" that are on the airwaves.  [02:06]

We need to apply critical thinking to these scientific insights that get pounded down our throat every day. [05:26]

V02 max is overrated and Zone Two is overrated. [08:57]

Always come back to the intuitive approach which is the foundation of making correct training decisions. [12:51]

 

LINKS:
Brad Kearns.com
BradNutrition.com
B.rad Superdrink – Hydrates 28% Faster than Water—Creatine-Charged Hydration for Next-Level Power, Focus, and Recovery
B.rad Whey Protein Superfuel - The Best Protein on The Planet!
Brad’s Shopping Page
BornToWalkBook.com
B.rad Podcast – All Episodes
Peluva Five-Toe Minimalist Shoes

 

We appreciate all feedback, and questions for Q&A shows, emailed to podcast@bradventures.com. If you have a moment, please share an episode you like with a quick text message, or leave a review on your podcast app. Thank you!

Check out each of these companies because they are absolutely awesome or they wouldn’t occupy this revered space. Seriously, I won’t promote anything that I don't absolutely love and use in daily life:


B.rad Nutrition: Premium quality, all-natural supplements for peak performance, recovery, and longevity; including the world's highest quality whey protein!


Peluva: Comfortable, functional, stylish five-toe minimalist shoe to reawaken optimal foot function. Use code BRADPODCAST for 15% off!


Ketone-IQ Save 30% off your first subscription order & receive a free six-pack of Ketone-IQ!
Get Stride: Advanced DNA, methylation profile, microbiome & blood at-home testing. Hit your stride the right way, with cutting-edge technology and customized programming. Save 10% with the code BRAD.


Mito Red Light: Photobiomodulation light panels to enhance cellular energy production, improve recovery, and optimize circadian rhythm. Use code BRAD for 5% discount!


Online educational courses: Numerous great offerings for an immersive home-study educational experience


Primal Fitness Expert Certification: The most comprehensive online course on all aspects of traditional fitness programming and a total immersion fitness lifestyle. Save 25% on tuition with code BRAD!

In this episode, I talk about the modern tendency to obsess over &ldquo;science says&hellip;&rdquo; posts&mdash;like the viral claim that slapping your quadriceps ten times will wake up your motor cortex, spike your stretch reflex, and increase vertical jump by 18% and sprint speed by 12%.
I describe why these numbers raised my hackles, walk through the reality of neural activation and theatrics we see from athletes like Karsten Warholm and Noah Lyles, and explain why a 12% speed boost would mean my 60-year-old 400-meter time drops from 60 seconds to 53.8, which is royal screaming BS. You&rsquo;ll hear reactions from world-class masters sprinters like Lion Martinez and Cynthia Monteleone, and my reminder that most of these studies are done on minimally conditioned college kids getting paid $60&mdash;not real sprinters suddenly finding new superpowers.
I also broaden the discussion to our habit of oversimplifying fitness with VO₂ max numbers, zone-two worship, HRV scores, and morning heart rate, when the truth is much more nuanced. VO₂ max is highly constrained by genetics, zone two is overrated, and walking and zone one deliver tremendous aerobic benefits&mdash;just look at Eliud Kipchoge spending 83% of his training there.
I emphasize that intuitive readiness to train&mdash;your bounce, your warmup feel, your own voice&mdash;will always beat a wearable metric, and even the &ldquo;best&rdquo; performance booster (a gun to your head!) won&rsquo;t give you a magical 12% sprint increase.
This show is all about using critical thinking, not getting intimidated by data, and remembering that nothing is more powerful than your own intuition.
&nbsp;
TIMESTAMPS:
There is some validity to the idea of waking up the central nervous system and priming it for a peak explosive effort, but Brad has some problems with "facts" that are on the airwaves.&nbsp; [02:06]
We need to apply critical thinking to these scientific insights that get pounded down our throat every day. [05:26]
V02 max is overrated and Zone Two is overrated. [08:57]
Always come back to the intuitive approach which is the foundation of making correct training decisions. [12:51]
&nbsp;
LINKS:
<ul>
<li><a href="https://bradkearns.com/podcast-index/">Brad Kearns.com</a></li>
<li><a href="http://bradnutrition.com/">BradNutrition.com</a></li>
<li><a href="https://a.co/d/3pVVl9w">B.rad Superdrink &ndash; Hydrates 28% Faster than Water&mdash;Creatine-Charged Hydration for Next-Level Power, Focus, and Recovery</a></li>
<li><a href="about:blank">B.rad Whey Protein Superfuel - The Best Protein on The Planet!</a></li>
<li><a href="https://bradkearns.com/shop/">Brad&rsquo;s Shopping Page</a></li>
<li><a href="http://borntowalkbook.com/">BornToWalkBook.com</a></li>
<li><a href="https://bradkearns.com/podcast-index/">B.rad Podcast &ndash; All Episodes</a></li>
<li><a href="https://peluva.com/?view=cro-id28570">Peluva Five-Toe Minimalist Shoes</a><a href="https://www.primalhealthcoach.com/blog/primal-movement-the-key-to-unlocking-your-bodys-potential/"></a></li>
</ul>
&nbsp;
We appreciate all feedback, and questions for Q&amp;A shows, emailed to&nbsp;<a href="mailto:getoveryourselfpodcast@gmail.com">podcast@bradventures.com</a>. If you have a moment, please share an episode you like with a quick text message, or leave a review on your podcast app. Thank you!
Check out each of these companies because they are absolutely awesome or they wouldn&rsquo;t occupy this revered space. Seriously, I won&rsquo;t promote anything that I don't absolutely love and use in daily life:
<ul>
<li>
<a href="http://bradnutrition.com/?utm_source=brad-kearns-news.beehiiv.com&amp;utm_medium=referral&amp;utm_campaign=brad-kearns-news-dismantling-the-modern-fitness-lie">B.rad Nutrition:</a> Premium quality, all-natural supplements for peak performance, recovery, and longevity; including the world's highest quality whey protein!
</li>
<li>
<a href="https://peluva.com/?sscid=91k7_1q58j&amp;utm_source=brad-kearns-news.beehiiv.com&amp;utm_medium=newsletter&amp;utm_campaign=brad-kearns-news-dismantling-the-modern-fitness-lie">Peluva</a>: Comfortable, functional, stylish five-toe minimalist shoe to reawaken optimal foot function. Use code BRADPODCAST for 15% off!
</li>
<li>
<a href="https://ketone.com/BRAD?utm_source=brad-kearns-news.beehiiv.com&amp;utm_medium=newsletter&amp;utm_campaign=brad-kearns-news-dismantling-the-modern-fitness-lie">Ketone-IQ</a>&nbsp;Save 30% off your first subscription order &amp; receive a free six-pack of Ketone-IQ!
</li>
<li><a href="http://getstride.com" data-saferedirecturl="https://www.google.com/url?q=http://getstride.com&amp;source=gmail&amp;ust=1744479083574000&amp;usg=AOvVaw2M5EotlxxWpksCKN7ZVyMD">Get Stride: </a>Advanced DNA, methylation profile, microbiome &amp; blood at-home testing. Hit your stride the right way, with cutting-edge technology and customized programming. Save 10% with the code BRAD.</li>
<li>
<a href="https://www.mitoredlight.com/?utm_source=brad-kearns-news.beehiiv.com&amp;utm_medium=newsletter&amp;utm_campaign=brad-kearns-news-dismantling-the-modern-fitness-lie">Mito Red Light:</a>&nbsp;Photobiomodulation light panels to enhance cellular energy production, improve recovery, and optimize circadian rhythm. Use code BRAD for 5% discount!
</li>
<li>
<a href="https://bradventures.thinkific.com/collections?utm_source=brad-kearns-news.beehiiv.com&amp;utm_medium=newsletter&amp;utm_campaign=brad-kearns-news-dismantling-the-modern-fitness-lie">Online educational courses:</a>&nbsp;Numerous great offerings for an immersive home-study educational experience
</li>
<li>
<a href="https://www.primalhealthcoach.com/brad/?utm_source=brad-kearns-news.beehiiv.com&amp;utm_medium=newsletter&amp;utm_campaign=brad-kearns-news-dismantling-the-modern-fitness-lie">Primal Fitness Expert Certification</a>: The most comprehensive online course on all aspects of traditional fitness programming and a total immersion fitness lifestyle. Save 25% on tuition with code BRAD!
</li>
</ul>

Join Brad Kearns, New York Times bestselling author, world #1 ranked masters 60+ high jumper, Speedgolf world record holder, and former world #3 ranked pro triathlete, in pursuing peak performance with passion throughout life. Brad delivers an engaging mix of step-by-step education on important health topics like staying fit, strong and powerful as you age; transforming diet to lose body fat and increase energy; sort through hype and misinformation to make simple, sustainable lifestyle changes; and broaden your perspective beyond a fit body to experience happy relationships, nonstop personal growth, and ultimately sail to 100 with a happy, healthy, long life. Let’s explore beyond shortcuts, hacks, and crushing competition to laugh, have fun, appreciate the journey, and not take ourselves too seriously. It’s time to B.rad!

 

Join Brad Kearns, New York Times bestselling author, world #1 ranked masters 60+ high jumper, Speedgolf world record holder, and former world #3 ranked pro triathlete, in pursuing peak performance with passion throughout life. Brad delivers an engaging mix of step-by-step education on important health topics like staying fit, strong and powerful as you age; transforming diet to lose body fat and increase energy; sort through hype and misinformation to make simple, sustainable lifestyle changes; and broaden your perspective beyond a fit body to experience happy relationships, nonstop personal growth, and ultimately sail to 100 with a happy, healthy, long life. Let&rsquo;s explore beyond shortcuts, hacks, and crushing competition to laugh, have fun, appreciate the journey, and not take ourselves too seriously. It&rsquo;s time to B.rad!
&nbsp;

Brad Kearns, NY Times bestselling author and world #1 masters age 60+ high jumper, offers a fun and diverse mix of interviews with leading authors and health experts, and  how-to shows for peak performance, weight loss, personal growth, and longevity