
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

Nov 7, 2023 • 50min
Episode 373: Javelina 100 Mile Race Recap
Nicole joined for this episode as we recap my race at this year's Javlina 100 Mile where I completed the five loop course in 13 hours 34 minutes 08 seconds for fifth overall. LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones HPO Sponsors: zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Articles mentioned in this episode: The Javelina 100 Mile & Fueling Javelina 100 Mile Nicole: @nkbitter Zach: zachbitter.com IG: @zachbitter Tw: @zbitter Substack: zachbitter.substack.com FB: @zbitterendurance Strava: Zach Bitter TikTok: @zachbitter Threads: @zachbitter

Oct 25, 2023 • 44min
Episode 372: Javelina 100 - Reflecting On Build UP
For this episode, I reflect on the training build up leading into the 2023 Javelina 100 Mile. LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones HPO Sponsors: 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 Tw: @zbitter Substack: zachbitter.substack.com FB: @zbitterendurance Strava: Zach Bitter TikTok: @zachbitter Threads: @zachbitter

Oct 20, 2023 • 1h 21min
Episode 371: Nick Norwitz, PhD - Keto Advocacy Gone Too Far?
Dr. Nicholas Norwitz obtained his PhD in ketogenic metabolism and neurodegenerative diseases at Oxford University and is now working towards his MD at Harvard Medical School. Nick follows a ketogenic diet, and has been heavily involved in research and the public conversation around proper application of low carbohydrate/ketogenic ways of eating. For this episode, we address the question of how far is too far when it comes to advocating for this way of eating. As low carb and ketogenic diets become more popular, what responsibility do advocates have when speaking to the application of these dietary protocols. LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones HPO Sponsors: zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Nick: newmediketo.com Tw: @nicknorwitz Zach: zachbitter.com IG: @zachbitter Tw: @zbitter Substack: zachbitter.substack.com FB: @zbitterendurance Strava: Zach Bitter TikTok: @zachbitter Threads: @zachbitter

Oct 12, 2023 • 1h 16min
Episode 370: Dr. David Saenger - Cardiovascular Health & Endurance Training
Dr. David Saenger is a cardiologist, ultramarathon runner, and someone who practices intermittent fasting and a low carbohydrate approach with his nutrition. He joined the show to discuss cardiovascular health and complications related to endurance training. Studies Mentioned: Clarke, P. M., Walter, S. J., Hayen, A., Mallon, W. J., Heijmans, J., & Studdert, D. M. (2012). “Survival of the fittest: Retrospective cohort study of the longevity of Olympic medallists in the modern era.” BMJ, 345 Antero J., Tanaka H., De Larochelambert Q., et al “Female and male US Olympic athletes live 5 years longer than their general population counterparts: a study of 8124 former US Olympians” British Journal of Sports Medicine 2021;55:206-212 Podcast Episodes Mentioned: Episode 337: The Long Run Considering the Variables Episode 344: Endurance Training Simplified Episode 346: Short Intervals Simplified Episode 348: Long Intervals Simplified Episode 352: Proper Aid Station Navigation Episode 356: Easy Run - Simplified Episode 363: Mental Training For Endurance Episode 366: Race Course Specific Training Episode 369: Speed Work Distribution & Double Threshold Sessions David: peacehealth.org/care-providers/david-r-saenger-md X/Twitter: @saenger_david Zach: zachbitter.com IG: @zachbitter Tw: @zbitter Substack: zachbitter.substack.com FB: @zbitterendurance Strava: Zach Bitter TikTok: @zachbitter Threads: @zachbitter

Oct 10, 2023 • 34min
Episode 369: Speed Work Distribution & Double Threshold Sessions
For this episode I outline how I like to position speed work in a training build up. I also touch on the double threshold training model, and if you should consider incorporating it into your endurance training. LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones HPO Sponsors: zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Podcast Episodes Mentioned: Episode 337: The Long Run Considering the Variables Episode 344: Endurance Training Simplified Episode 346: Short Intervals Simplified Episode 348: Long Intervals Simplified Episode 352: Proper Aid Station Navigation Episode 356: Easy Run - Simplified Episode 363: Mental Training For Endurance Episode 366: Race Course Specific Training Zach: zachbitter.com IG: @zachbitter Tw: @zbitter Substack: zachbitter.substack.com FB: @zbitterendurance Strava: Zach Bitter TikTok: @zachbitter Threads: @zachbitter

Oct 3, 2023 • 1h 24min
Episode 368: Kristian Morgan Breaks 2,200 Mile Appalachian Trail Record
Kristian Morgan is an ultramarathon athlete who focuses on long trail projects. He currently holds the second fastest completion of the Appalachian Trail, which he completed in 44 days 4 hours 54 minutes. Kristian Morgan has set a new Fastest Known Time (FKT) (supported) Southbound on the Appalachian Trail, completing the 2,200 miles in 45 days, 4 hours and 27 minutes. LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones HPO Sponsors: zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Kristian: kristianultra.com IG: @ultrarunningcoach Tw: @KristianUltra Zach: zachbitter.com IG: @zachbitter Tw: @zbitter Substack: zachbitter.substack.com FB: @zbitterendurance Strava: Zach Bitter TikTok: @zachbitter Threads: @zachbitter

Sep 26, 2023 • 1h 28min
Episode 367: Andrea Love, PhD - Alt-Diets To Cult Diets
Dr. Andrea Love is an Immunologist and co-host of Unbiased Science Podcast. She is also the Director of the American Lyme Disease Foundation (ALDF). For this episode, she joined the show to talk about how alternative dietary approaches often reach a point where they become ideological and "cult like" versus simply being an alternative approach. Episode Details: zachbitter.com/hpo-episode-367 LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones HPO Sponsors: zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Andrea: unbiasedscipod.com IG: @dr.andrealove Zach: zachbitter.com IG: @zachbitter Tw: @zbitter Substack: zachbitter.substack.com FB: @zbitterendurance Strava: Zach Bitter TikTok: @zachbitter Threads: @zachbitter

Sep 15, 2023 • 44min
Episode 366: Race Course Specific Training
This episode looks at how important race course specificity is relative to other aspects of your training, and how this may vary depending on where you are in training, lifestyle, and degree of course uniqueness. LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones HPO Sponsors: zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Podcast Episodes Mentioned: Episode 344: Endurance Training Simplified Episode 346: Short Intervals Simplified Episode 348: Long Intervals Simplified Episode 356: Easy Run - Simplified Zach: zachbitter.com IG: @zachbitter Tw: @zbitter Substack: zachbitter.substack.com FB: @zbitterendurance Strava: Zach Bitter TikTok: @zachbitter Threads: @zachbitter

Sep 8, 2023 • 60min
Episode 365: Brad Stulberg - Master Of Change
Brad Stulberg researches, writes, and coaches on health, well-being, and sustainable excellence. He is the bestselling author of The Practice of Groundedness and co-author of Peak Performance. Stulberg regularly contributes to the New York Times, and his work has been featured in the Wall Street Journal, Washington Post, Los Angeles Times, The New Yorker, Sports Illustrated, Outside Magazine, Forbes, and other outlets. He also serves as the co-host of The Growth Equation podcast and is on faculty at the University of Michigan’s Graduate School of Public Health. In his coaching practice, he works with executives, entrepreneurs, physicians, and athletes on their mental skills and overall well-being. LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones HPO Sponsors: 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 Tw: @zbitter Threads: @zachbitter FB: @zbitterendurance TikTok: @zachbitter Strava: Zach Bitter Find Brad: bradstulberg.com IG: @bradstulberg Tw: @BStulberg

Aug 23, 2023 • 1h 34min
Episode 364: Andy Glaze - 100 Mile Week Streak
Andy Glaze is an avid ultramarathon runner and Fire Chief. For 180 weeks and counting, he has ran at least 100 miles. This includes many 200+ mile weeks, including one where he completed a 100 mile race and a 250 mile race with only one day in between. LMNT: drinkLMNT.com/HPO deltaG: deltagketones.com - IG: @deltag.ketones HPO Sponsors: https://zachbitter.com/hposponsors Support HPO: zachbitter.com/hpo Zach’s Coaching: https://zachbitter.com/coaching Andy: IG: @amglaze TikTok: @glazeruns YouTube: @glazeruns Zach: zachbitter.com IG: @zachbitter Tw: @zbitter Threads: @zachbitter FB: @zbitterendurance TikTok: @zachbitter Strava: Zach Bitter