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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.
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Episode 438: Ultra World Records & National Championships - Charlie Lawrence
1:38:31
1:38:31
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Charlie competed in D1 Cross Country and Track & Field for the University of Minnesota. He currently holds the World Record for the 50 Mile, 4:48:21 (5:46/mi). He recently won the USATF 50 KM Road Championships in a time of 2:49:01. Endurance Training Simplified Series Zach’s Low Carb Endurance Approach Series LMNT: drinkLMNT.com/HPO (free sample p…
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Episode 437: Backyard Ultras with Sam Harvey
1:14:08
1:14:08
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Sam Harvey is one of the best Backyard Ultra runners in the World. He was part of the legendary push that resulted in three men breaking the World Record at the Big’s Backyard Ultra Championships in 2023. He has a wide range, which he recently showcased by winning the Tarawera 100 mile this year. Endurance Training Simplified Series Zach’s Low Carb…
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Episode 436: 1000 Mile Ultra Marathon with James Pieratt
1:25:33
1:25:33
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James Pieratt of Wild Hunt Conditioning is preparing for a 1000 mile point to point journey along the West Coast, hitting some historic sites along the way. We unpack some of the specifics in preparation and event execution. Endurance Training Simplified Series Zach’s Low Carb Endurance Approach Series LMNT: drinkLMNT.com/HPO (free sample pack with…
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Episode 435: Ultras In Antarctica - Akshay Nanavati
1:31:30
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Adventurer, speaker, author and USMC Vet. Just completed a 60 day solo, unsupported journey covering 500 miles across Antarctica. 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…
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For this episode, I share some thoughts on the topic of "fit but unhealthy." Recently, pro triathlete Lionel Sanders shared some details about his health concerns. This came as a surprise to some as he is visually very healthy and performed at a very high level. Some have hypothesized it is due to his hyper carb fueling strategy. Others have sugges…
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Episode 433: Ultramarathon Record Keeping - Trishul Cherns & Bob Hearn
1:35:37
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Trishul and Bob are the President and Record Keeper for the Global Organization of Multi-day Ultrarunners (GOMU). GOMU was established to supplement the existing government bodies that only recognize records of certain ultramarathon events. Both Trishul and Bob have rich histories in ultramarathon, with 100s of official events to their names. We di…
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Episode 432: Hybrid Workouts & Hills - Training Recap
34:23
34:23
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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…
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Episode 431: Ultra Run Across Texas with Matt Johnson
1:34:21
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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.…
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Episode 430: Running Shoes with Brady Holmer
1:37:44
1:37:44
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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 Devi…
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Episode 429: Blisters & Your Best Workout - Listener Q&A
32:43
32:43
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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: maui…
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Episode 428: Intervals & Long Runs - Training Recap
25:49
25:49
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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 …
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Episode 427: Ryan Dreyer - Community Based Training
1:13:33
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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: dri…
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Episode 426: Steve Magness - Win the Inside Game
1:06:40
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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 di…
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Episode 425: The Hunt for the Best Super Shoe with Dustin Joubert
1:42:21
1:42:21
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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 LM…
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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 p…
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Episode 423: Is Low Carb Back? New Study Sheds Light
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29:47
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A study on Low Carb Keto diets 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 s…
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Episode 422: Apache Endurance with James Pieratt
1:17:55
1:17:55
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This episode continues a series covering some of the most prolific ancient endurance groups and tribes the world has ever seen. Joining me as co-host for this series is James Pieratt. We unpack what made the Apache some of the most impressive endurance athletes of all time. For more on James, check out episode 395 where we discuss his lifestyle. Ja…
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Episode 421: Dr. Samuel Spinelli - Hamstring Health & Performance
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57:55
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Dr. Samuel Spinelli is a Doctor of Physical Therapy and Certified Strength and Conditioning Specialist (CSCS). He is the cofounder of Rehab Explained and Citizen Athletics. He has helped many professional athletes rehab and prepare for peak performance. He joined the show to share his insights on hamstring performance and health. Endurance Training…
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Episode 420: Davy Crockett - Ultramarathon History
1:35:45
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Davy Crockett is an ultramarathon runner, and hosts Ultrarunning History. His podcast and books dive deeper than any other ultramarathon history resource. Davy also is the director of the American Ultrarunning Hall of Fame. Endurance Training Simplified Series Zach’s Low Carb Endurance Approach Series LMNT: drinkLMNT.com/HPO deltaG: deltagketones.c…
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Episode 419: Ultramarathon Coaching - J Scott Chapman
1:32:51
1:32:51
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J Scott Chapman is a certified ultrarunning coach who really enjoys big mountain races. Given that two of his core values are curiosity and exploration, he loves to read the latest studies, but he knows that ultras are not run in a lab. His coaching philosophy embraces the idea that while there are established training principles, no single approac…
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Episode 418: Hot Cold Contrast - Dr. Jess Tranchina
1:33:03
1:33:03
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Dr. Jess Tranchina is a PT, DPT, NASM-CPT, A.R.T Certified Provider, CKTP. She has been an athlete most of her life. Training and competing in runs from the 5K to 50ks, triathlons from the sprint distance to Ironman distance, strength competitions, and figure competitions has provided her with opportunities to train from the best, learn from the be…
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Episode 417: Brady Holmer - Low Mileage Marathon PR, Creatine & Carb Timing
1:34:31
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Brady Holmer is a MSc in Human Performance, endurance athlete, and science writer. He hosts Physiologically Speaking, a great resources for both health and endurance performance. Brady recently dropped 10 minutes off his marathon PR on a four day per week running program, clocking a speedy time of 2:26:28. We unpack how he structured his training a…
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Episode 416: Dr. Courtney Conley - Foot Strength & Health
1:24:08
1:24:08
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Dr. Courtney Conley is the creator of Gait Happens, an online education company helping people from around the globe improve their foot function. She has taken the past several years to develop online courses to educate clinicians on foot anatomy, the importance of foot health and the truths behind modern footwear. Courtney: gaithappens.com - IG: @…
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Episode 415: Tara Dower - Outright Appalachian Trail Record
1:23:07
1:23:07
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Tara Dower recently broke the record for fastest traverse of the full Appalachian Trail (AT) outright. No man or women has covered the distance faster. The AT is 2,197.4 miles over unforgiving terrain. Tara covered it in 40 days 18 hours 05 minutes, which is the equivalent of approximately two marathons per day. Tara also holds the Women's supporte…
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Episode 414: Marathon Monks with James Pieratt
1:37:48
1:37:48
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This episode kicks off a series of episodes covering some of the most prolific ancient endurance groups and tribes the world has ever seen. Joining me as co-host for this series is James Pieratt. For more on James, check out episode 395 where we discuss his incredible lifestyle. Endurance Training Simplified Series Zach’s Low Carb Endurance Approac…
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