
Human Performance Outliers Podcast
Latest Episodes

For this training recap, I unpack a four week block of training where my main focus was a continuation of speed work development with a bit more variety of inputs this time around. Hybrid workouts, fast finishes, and hills all included. I highlight the thought process behind the programming, execution, and add some tips to consider in training as I build up for a 100 mile track ultra in June!
Endurance Training Simplified Series
Zach’s Low Carb Endurance Approach Series
LMNT: drinkLMNT.com/HPO (free sample pack with purchase)
deltaG: deltagketones.com Code: BITTER20
Maui Nui Venison: mauinuivenison.com/bitter
Support HPO: zachbitter.com/hposponsors
HPO Website: zachbitter.com/hpo
Amazon Store: amazon.com/shop/zachbitter
Zach’s Coaching: zachbitter.com/coaching
Zach’s Newsletter: substack.com/@zachbitter
Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter

Matt Johnson got into running in 2020 after discovering a love for the sport following a difficult youth, and a career in the National Guard. Since, he has built a successful Instagram channel that blends competitiveness and humor. He took his love of running across the State of Texas, an 841 mile journey in 17 days, raising awareness for ValorFit.
Endurance Training Simplified Series
Zach’s Low Carb Endurance Approach Series
LMNT: drinkLMNT.com/HPO (free sample pack with purchase)
deltaG: deltagketones.com Code: BITTER20
Maui Nui Venison: mauinuivenison.com
Support HPO: zachbitter.com/hposponsors
HPO Website: zachbitter.com/hpo
Amazon Store: amazon.com/shop/zachbitter
Zach’s Coaching: zachbitter.com/coaching
Zach’s Newsletter: substack.com/@zachbitter
Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter
Matt: IG @mattjohnson - YouTube: @mattjohnson__

For this episode, Brady and I dive into a group of running shoes that we have been putting through the paces the last couple of months, as well as touched on some models that we have worn historically. We also share some thoughts around running shoe considerations in general. Shoes covered include: Mizuno Neo Zen and Wave Rebellion Pro 3, Puma Deviate Nitro Elite 3, Mount to Coast R1 S1 and P1, Xero HFS II, Nike Zoom Fly 6, and Altra Vanish Carbon II.
Endurance Training Simplified Series
Zach’s Low Carb Endurance Approach Series
LMNT: drinkLMNT.com/HPO (free sample pack with purchase)
deltaG: deltagketones.com Code: BITTER20
Maui Nui Venison: mauinuivenison.com
Support HPO: zachbitter.com/hposponsors
HPO Website: zachbitter.com/hpo
Amazon Store: amazon.com/shop/zachbitter
Zach’s Coaching: zachbitter.com/coaching
Zach’s Newsletter: substack.com/@zachbitter
Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter
Brady: https://www.physiologicallyspeaking.com/ - X: @B_Holmer - IG: @brady.j.holmer - Strava

How should you go about managing and preventing blisters, and what workout is going to be best for you. This listener Q&A dives into these two topics.
Endurance Training Simplified Series
Zach’s Low Carb Endurance Approach Series
LMNT: drinkLMNT.com/HPO (free sample pack with purchase)
deltaG: deltagketones.com Code: BITTER20
Maui Nui Venison: mauinuivenison.com
Support HPO: zachbitter.com/hposponsors
HPO Website: zachbitter.com/hpo
Amazon Store: amazon.com/shop/zachbitter
Zach’s Coaching: zachbitter.com/coaching
Zach’s Newsletter: substack.com/@zachbitter
Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter

For this training recap, I unpack a four week block of training where my main focus was short intervals and long runs. I highlight the thought process behind the programming, execution, and add some tips to consider in training.
Endurance Training Simplified Series
Zach’s Low Carb Endurance Approach Series
LMNT: drinkLMNT.com/HPO (free sample pack with purchase)
deltaG: deltagketones.com Code: BITTER20
Maui Nui Venison: mauinuivenison.com
Support HPO: zachbitter.com/hposponsors
HPO Website: zachbitter.com/hpo
Amazon Store: amazon.com/shop/zachbitter
Zach’s Coaching: zachbitter.com/coaching
Zach’s Newsletter: substack.com/@zachbitter
Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter

Ryan Dreyer founded Tribal Training, a group based endurance training coaching service where members leverage a community approach to reach their goals. Ryan has completed both Ironman and ultramarathon distance events and coached many others reach their goals.
Endurance Training Simplified Series
Zach’s Low Carb Endurance Approach Series
LMNT: drinkLMNT.com/HPO (free sample pack with purchase)
deltaG: deltagketones.com Code: BITTER20
Maui Nui Venison: mauinuivenison.com
Support HPO: zachbitter.com/hposponsors
HPO Website: zachbitter.com/hpo
Amazon Store: amazon.com/shop/zachbitter
Zach’s Coaching: zachbitter.com/coaching
Zach’s Newsletter: substack.com/@zachbitter
Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter
Ryan: traintribal.com - IG: @theryandreyer - X: @theryandreyer

Steve Magness is a world-renowned expert on performance. He is the author of the new book, Win the Inside Game, and has also authored, Do Hard Things: Why We Get Resilience Wrong and The Surprising Science of Real Toughness. He is the coauthor of Peak Performance. The Passion Paradox, and the author of The Science of Running. For this episode we dive into the topics covered in his latest book.
Endurance Training Simplified Series
Zach’s Low Carb Endurance Approach Series
LMNT: drinkLMNT.com/HPO (free sample pack with purchase)
deltaG: deltagketones.com Code: BITTER20
Maui Nui Venison: mauinuivenison.com
Support HPO: zachbitter.com/hposponsors
HPO Website: zachbitter.com/hpo
Amazon Store: amazon.com/shop/zachbitter
Zach’s Coaching: zachbitter.com/coaching
Zach’s Newsletter: substack.com/@zachbitter
Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter
Steve: stevemagness.com IG: @stevemagness Tw: @stevemagness FB: facebook.com/stephenmagness

Dustin Joubert is a running researcher, PhD in Exercise Physiology and professor at St. Edwards University. He has a popular IG and website that deep dives into super shoe technology. He also runs a lab in Austin, Texas where he tests both running and shoe efficiency.
Endurance Training Simplified Series
Zach’s Low Carb Endurance Approach Series
LMNT: drinkLMNT.com/HPO (free sample pack with purchase)
deltaG: deltagketones.com Code: BITTER20
Maui Nui Venison: mauinuivenison.com
Support HPO: zachbitter.com/hposponsors
HPO Website: zachbitter.com/hpo
Amazon Store: amazon.com/shop/zachbitter
Zach’s Coaching: zachbitter.com/coaching
Zach’s Newsletter: substack.com/@zachbitter
Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter
Dustin: Lab Rat Rundown: https://labratrundown.wixsite.com/mysite - IG: @labratrundown

This is part one of a series this year where I reflect on my training blocks for 2025. This episode covers the first three weeks after switching from an offseason/strength focus towards running taking the primary position.
Endurance Training Simplified Series
Zach’s Low Carb Endurance Approach Series
LMNT: drinkLMNT.com/HPO (free sample pack with purchase)
deltaG: deltagketones.com - IG: @deltag.ketones Code: BITTER20
Support HPO: zachbitter.com/hposponsors
HPO Website: zachbitter.com/hpo
Amazon Store: amazon.com/shop/zachbitter
Zach’s Coaching: zachbitter.com/coaching
Zach’s Newsletter: substack.com/@zachbitter
Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter
A recent study was recently published by Prins, Noakes, Koutnik, et al. that examined the role of stable blood sugar through very small carbohydrate intake as the main determiner of performance for endurance athletes, as well as some insights into low carbohydrate performance compared to high carbohydrate. I take a look, and share some thoughts.
Brady's IG: @brady.j.holmer & Brady's post on topic
Endurance Training Simplified Series
Zach’s Low Carb Endurance Approach Series
LMNT: drinkLMNT.com/HPO
deltaG: deltagketones.com - IG: @deltag.ketones Code: BITTER20
Support HPO: zachbitter.com/hposponsors
HPO Website: zachbitter.com/hpo
Amazon Store: amazon.com/shop/zachbitter
Zach’s Coaching: zachbitter.com/coaching
Zach’s Newsletter: substack.com/@zachbitter
Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter