
Human Performance Outliers Podcast with Zach Bitter
Welcome to the Human Performance Outliers Podcast. Your host Zach Bitter, will take you through a series of interesting topics around health, fitness, endurance, running, hybrid athlete training, ultramarathon, and nutrition. Join in for interviews with folks exploring their outer limits and research in a wide variety of sports, fitness, and nutrition.
Latest episodes

Jul 23, 2024 • 1h 34min
Episode 403: Justin Wren - Fight For The Forgotten
Justin Wren, advocate for Pygmy Tribe, discusses building hospital in Congo, challenges providing clean water, sharing inspirational stories, and empowering positive impact through matching donations.

Jul 12, 2024 • 1h 42min
Episode 402: Ultra Updates With Joe Corcione
Joe and I unpack what we thought about this year's Western States Endurance Run, including reported fueling strategies, heat mitigation, competitive pressure, and shoe tech. We also touched on some other performances, including Jenny Hoffman's 24 Hour at Six Days in the Dome, and Megan Eckert hitting 526.301 miles in six days, new ultra gender gap study. SFuels: sfuelsgolonger.com code: BITTER5 (FREE SAMPLE PACK LIMITED OFFER) Janji: janji.com code: Bitter10 LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones Code: BITTER20 HPO Website: zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Joe: @joecorcione - The Everyday Ultra Podcast Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - Substack: zachbitter.substack.com - FB: @zbitterendurance - Strava: Zach Bitter - TikTok: @zachbitter

Jun 28, 2024 • 1h 50min
Episode 401: Professor Philip Calder - Seed Oil Truths
Philip Calder is Head of the School of Human Development and Health and Professor of Nutritional Immunology in the Faculty of Medicine, University of Southampton. He is an internationally recognized researcher on the metabolism and functionality of fatty acids, with an emphasis on the roles of omega-3 fatty acids, and on the influence of diet and nutrients on the immune and inflammatory responses. Topics Prof Philip Calder and I touched on for our seed oil discussion: Breakdown of different lipids and their impact (specifically cell membrane & structure) Impact of balance between omega 3 & 6 in diet Potential for lowering LA through simply meeting vs exceeding energy intake needs in energy surplus environments Heating LA (repeated deep frying, home cooking, processed shelf stored oils) Lag time to oxLDL impact and how it is impacted through adequate intake of antioxidants such as vit. E Lowering LA through removal versus addition of ALA in manufacturing Endurance Training Simplified Series Zach’s Low Carb Endurance Approach Series SFuels: sfuelsgolonger.com code: BITTER5 (FREE SAMPLE PACK LIMITED OFFER) Janji: janji.com code: Bitter10 LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones Code: BITTER20 HPO Website: zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - Substack: zachbitter.substack.com - FB: @zbitterendurance - Strava: Zach Bitter - TikTok: @zachbitter

Jun 25, 2024 • 1h 44min
Episode 400: Jae Gruenke - The Balanced Runner
Jae Gruenke from The Balanced Runner believes good running form means using your body the way it really works rather than fighting to move it some other way. For this episode we unpack a few topics related to pain free running. They include: Pros/Cons of Feldenkrais Method, how shoe type can impact running form, the role of forward lean, arm "swing", foot strike, and cadence for proper running. Endurance Training Simplified Series Zach’s Low Carb Endurance Approach Series SFuels: sfuelsgolonger.com code: BITTER5 (FREE SAMPLE PACK LIMITED OFFER) Janji: janji.com code: Bitter10 LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones Code: BITTER20 HPO Website: zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Jae: balancedrunner.com - IG: @the_balanced_runner - YT: youtube.com/@balancedrunner Zach: zachbitter.com IG: @zachbitter Tw: @zbitter Threads: @zachbitter FB: @zbitterendurance TikTok: @zachbitter Strava: Zach Bitter

Jun 20, 2024 • 1h 17min
Episode 399: 100 Miles - 11 Hours 51 Minutes
For this episode I break down my recent 100 mile at the Pettit Center, where I completed the distance in 11 hours 51 minutes (7:07/mi). Some topics include: Training: workout focus progression, training races, speed work focus Event strengths and weaknesses Event day nutrition Setting up crew Caffeine use Race mentality Post race recovery Post race nutrition Endurance Training Simplified Series Zach’s Low Carb Endurance Approach Series SFuels: sfuelsgolonger.com code: BITTER5 (FREE SAMPLE PACK LIMITED OFFER) Janji: janji.com code: Bitter10 LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones Code: BITTER20 HPO Website: zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - Substack: zachbitter.substack.com - FB: @zbitterendurance - Strava: Zach Bitter - TikTok: @zachbitter

Jun 10, 2024 • 28min
Episode 398: My Strength Routine
For this episode, I outline in detail how I currently program my strength training routine. SFuels: sfuelsgolonger.com code: BITTER5 (FREE SAMPLE PACK LIMITED OFFER) Janji: janji.com code: Bitter10 LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones Code: BITTER20 HPO Website: zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - Substack: zachbitter.substack.com - FB: @zbitterendurance - Strava: Zach Bitter - TikTok: @zachbitter

Jun 6, 2024 • 1h 48min
Episode 397: Ultra Updates With Joe Corcione
This is the first of a new type of episode I will be releasing with Joe Corcione as co-host. We will be covering topics and trends in the ultramarathon space. For this episode, we hit heavy on the Cocodona 250, discussed the new women's 48 Hour World Record, the trend of going longer yet with ultra, and the Spring Energy Gel controversy. SFuels: sfuelsgolonger.com code: BITTER5 (FREE SAMPLE PACK LIMITED OFFER) Janji: janji.com code: Bitter10 LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones Code: BITTER20 HPO Website: zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Joe: @joecorcione - The Everyday Ultra Podcast Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - Substack: zachbitter.substack.com - FB: @zbitterendurance - Strava: Zach Bitter - TikTok: @zachbitter

Jun 3, 2024 • 58min
Episode 396: Coaching At Cocodona 250 Mile
This year I went to the Cocodona 250 to follow a few of my coaching clients along the 250 mile, 125 mile courses. As the sport of ultramarathon continues to grow, these type of experiences are beneficial as both a coach and an athlete. This episode highlights what I learned about some differences these longer ultras present. SFuels: sfuelsgolonger.com code: BITTER5 (FREE SAMPLE PACK LIMITED OFFER) Janji: janji.com code: Bitter10 LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones Code: BITTER20 HPO Website: zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - Substack: zachbitter.substack.com - FB: @zbitterendurance - Strava: Zach Bitter - TikTok: @zachbitter

May 27, 2024 • 2h 5min
Episode 395: James Pieratt - The Ultimate Hybrid Athlete
James Pieratt, the founder of Wild Hunt Conditioning, transformed his life from a heroin addiction to becoming a hybrid athlete. He shares his incredible journey, including running 500 miles and mastering Jiu Jitsu. The conversation touches on the mental resilience needed for endurance running and how engaging in sports can help combat addiction. Pieratt also delves into his passion for bear hunting and the rich cultural significance of tribal running techniques, offering insights into nutrition and holistic training for peak performance.

May 13, 2024 • 44min
Episode 394: My Mobility Routine
For this episode, I unpack the specific movements I focus on for my mobility routine, and how I embed different aspects of mobility into my daily life. SFuels: sfuelsgolonger.com code: BITTER5 (FREE SAMPLE PACK LIMITED OFFER) Janji: janji.com code: Bitter10 LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones Code: BITTER20 HPO Website: zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Zach: zachbitter.com IG: @zachbitter X/Tw: @zbitter Substack: zachbitter.substack.com FB: @zbitterendurance Strava: Zach Bitter TikTok: @zachbitter