
Advertise on podcast: Flex Diet Podcast
Rating
4.7from
This podcast has
413 episodes
Language
EnglishPublisher
Dr. Mike T NelsonExplicit
Yes
Date created
2019/11/18
Latest episode
2026/10/05
Average duration
79 min.
Release period
7 days
Description
Dr. Mike T Nelson gets geeky with the latest research and scientific findings in the fitness world. Visit www.flexdiet.com to get Flex Diet Certified and www.miketnelson.com for more geeky goodness.
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Strength Is a Skill: Sensory Training, the Nervous System & Neuroplasticity with Dr. Jordan Shallow — #407
2026/10/05
Dr. Jordan Shallow, D.C., known as “The Muscle Doc,” is a chiropractor, strength and conditioning coach, and former competitive powerlifter. He is the founder of Pre-Script®, an education company that teaches coaches applied biomechanics and resistance training.
Is getting stronger really about muscle, or about how well your nervous system learns the lift? Dr. Jordan Shallow, “The Muscle Doc,” explains why strength and size follow skill, how your senses shape movement, and how simple sensory inputs may change the way you train.
Expect to learn when internal versus external cues make sense for strength and hypertrophy, how an intermediate lifter can use practice volume and frequency, why great lifters treat the empty bar like the heavy one, how touch, vibration, skin stretch and pressure may influence movement, and how neuroplasticity, lucid dreaming and film study connect to learning skills — and much more.
Connect with Jordan:
Website: themuscledoc.comPre-Script: pre-script.comInstagram: @the_muscle_docPre-Script on Instagram: @pre_scriptEpisodes you'll enjoy next:
#401 — Psychedelics, Neuroplasticity and the Military-to-Spiritual Journey with Rick Alexander: A former Special Operations combat medic explains how a psychedelic experience reshaped his worldview, and what it taught him about neuroplasticity.#311 — Maximizing Athletic Performance with Neurology: Insights from Dr. Dylan Seeley: Dr. Dylan Seeley on how applying neurology can improve athletic performance.Episode Timestamps:
03:47 Internal vs. external cues for strength and hypertrophy06:24 Longevity culture and why skill comes before loading09:58 Intermediate bench press case study: practice volume and frequency17:34 Ed Coan, intent and moving the empty bar like the heavy bar23:30 Sensory-motor savants: Tiger Woods, Nick Kyrgios and Brian Shaw27:29 How trainable is the sensory system?29:35 Foam rollers, kinesio tape and cupping through a neurological lens32:10 Perception, the electromagnetic spectrum and the limits of our senses36:23 Mechanoreceptors and vibration41:05 Light touch, vibration, skin stretch and deep pressure47:14 Fast feedback: testing and iterating with the nervous system51:38 Neuroplasticity, psychedelics and learning skills faster1:02:45 Reality Switch Technology, tropanes and perception1:05:08 Dreams, hypnagogic hallucinations and altered perception1:12:26 Lucid dreaming and practicing the deadlift without the load1:23:19 Film study, muscle memory and watching good reps1:26:37 Where to find Dr. Jordan Shallow
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
Is Zone 2 Overrated? HIIT, VO2 Max & Metabolic Flexibility with Dr. Martin Gibala — #405
2026/09/28
Dr. Martin Gibala is a Professor of Kinesiology at McMaster University and one of the world's leading researchers on high-intensity interval training.
Can short bursts of hard cardio outperform hours of Zone 2 for the average person? Exercise physiologist Dr. Martin Gibala explains how HIIT can improve VO2 max and metabolic flexibility, why elite athletes' 80/20 split may not fit a time-strapped schedule, and how to judge vigorous effort without chasing a perfect heart-rate zone.
Expect to learn how to scale HIIT for beginners, what RPE and the talk test reveal about vigorous effort, when short sprints differ from VO2 max intervals, why elite athletes’ 80/20 approach may not fit your schedule, how Zone 2 definitions can mislead, and what metabolic flexibility and mitochondrial capacity really mean—and much more.
Connect with Martin:
Website: martingibala.comX: @gibalamBook: The One-Minute Workout (Avery, 2017; with Christopher Shulgan)Podcast: Exercise ScienceEpisodes you'll enjoy next:
#402 — VO2 Max, Zone 2 Training & the Psychology of Human Performance — Ben Skutnik: Dr. Ben Skutnik cuts through Zone 2 hype and discusses VO2 max and aerobic-training evidence.#387 — Nathan T. Jenkins on Metabolic Flexibility, Aerobic Base, and First Principles: a look at aerobic development, energy systems, and repeated high-intensity performance.Episode Timestamps:
2:25 Can beginners benefit from HIIT?4:20 Interval training basics and scaling effort7:13 Defining vigorous effort with RPE, heart rate, and the talk test11:32 Designing HIIT workouts around time and preference13:48 VO2 max intervals versus shorter sprints16:39 Moderate versus vigorous exercise: guidelines and time efficiency18:36 Is Zone 2 and the 80/20 rule right for everyone?22:50 Why Zone 2 definitions and wearables cause confusion29:12 Do you need an aerobic base before starting intervals?33:00 Why elite athlete training is not a blueprint for everyone35:22 What low-intensity volume may do for endurance athletes38:46 Double-threshold sessions, training stress, and recovery41:17 Carbohydrate intake and gut training in endurance sports44:31 Emerging recovery strategies and exogenous ketones49:12 Lactate supplementation: promise versus current evidence51:19 Fat max, metabolic flexibility, and mitochondrial capacity55:31 Exercise Science podcast and evidence over hype
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
Episode 404: Whole-Body MRI, CT Scans, and What Imaging Can Tell You — Matthew Paul Clemons, MD
2026/09/21
Matthew Paul Clemons, MD, is a diagnostic radiologist specializing in nuclear medicine and body imaging. He is Head of Nuclear Medicine at Radiology Partners Houston and a rectal and prostate cancer specialist.
Whole-body MRI promises a detailed look under the hood—but what can a quick screening scan actually see, miss, and send you chasing? Dr. Paul Clemons explains why a whole-body MRI is a limited study, how incidental findings can lead to further tests, and why standard screening remains the better choice for most people.
Expect to learn how MRI creates images and why scan protocols take time, why open MRI systems can have important image-quality limits, how PET/MRI adds functional information, why CT and MRI can be complementary rather than redundant, how radiation and implanted devices factor into decisions, why spine findings do not always match symptoms, when conservative care deserves consideration, and where DEXA versus MRI can be useful for tracking body-composition trends.
Episodes you'll enjoy next:
#237 — Demystifying Body Composition Testing with Dr Grant Tinsley and Dr Eric Helms: a practical companion discussion on body-composition measurement and its limits.#159 — Advice, Mentorships, Askholes, and Diagnostics: An Interview with Dr. Adam Sumarski: a related conversation on diagnostics and imaging in sports medicine.Episode Timestamps:1:50 Whole-body MRI and preventive screening2:52 How MRI works: magnets, noise, and safety7:05 Open MRI, magnet strength, and image quality9:05 MRI sequences, scan time, and diagnostic protocols11:47 Why whole-body MRI is a limited screen12:46 Incidental findings and downstream testing13:57 High-risk screening, rare genetic conditions, and lung limits17:53 Sensitivity, specificity, and standard screening24:15 PET/MRI and where whole-body imaging has a clinical role27:05 Why MRI and PET/CT systems are expensive to install31:59 MRI safety, implants, and pacemakers36:36 CT versus MRI: why one scan can lead to another38:52 Whole-body CT, radiation, and its limits43:47 Back-pain scans: why an image may not explain symptoms51:44 Physical therapy, surgery, and warning signs58:46 Evaluating evidence for peptides, stem cells, and biologics1:05:47 Choosing an orthopedic surgeon for athletic goals1:15:24 DEXA versus MRI for body-composition trends
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
AI Disclosure, Deepfakes & the Death of Expertise — Dean Guedo & Jeb Stuart Johnston — #404
2026/09/14
Dean Guedo is an Edmonton, Alberta-based online nutrition coach and strength/nutrition professional with roughly a decade in fitness, athletics and strength sports, and Jeb Stuart Johnston is a National Board Certified Health & Wellness Coach and the Charleston, SC-based founder of Food on the Mind, specializing in emotional eating and food obsession.
Dean and Jeb join Dr. Mike T Nelson for their yearly AI check-in, getting into whether creators should disclose AI use and why deepfaked video is a very different beast than AI-assisted writing. The conversation ranges into dead internet theory, why so much hard-won fitness expertise never made it onto the internet at all, and why demanding physical skills may become more valuable, not less, as AI accelerates.
Expect to learn whether creators should disclose their AI use and why deepfaked video is a fundamentally different risk category than AI-assisted writing, why LLM writing may have already "peaked" and regresses toward the average, why fitness's hard-won oral tradition (Charlie Francis, Louie Simmons, old forums) never made it onto the internet at all, why oral defense of your own thinking may be the most AI-proof skill you can build, and why demanding physical skills could become more valuable — not less — as AI accelerates, and much more.
Connect with Dean:
Instagram: @walk.more.kingWebsite: getfluxed.caConnect with Jeb:
Website: foodonthemind.comInstagram: @jebstuartjohnstonNewsletter: Tangential, Inconsequential, Existential and Experiential (Substack)Episodes you'll enjoy next:
Episode 136 — Flex Diet, Phys Flex, Metabolism and Nutrition Research for Compound Performance (Jeb and Dean interview Dr. Mike T Nelson): Listen hereS2 Ep 28 — High Flux Model and More for Fat Loss and Client Coaching, an interview with Dean Guedo and Jeb Johnston of StrongerU: Listen hereEpisode Timestamps:
01:35 Welcome to the podcast & guest introductions03:15 Should you disclose your AI use?06:32 Deepfake video vs. AI-assisted writing: a different risk category07:53 AI's exponential growth and the "singularity" question11:11 What is "AI slop," and does it actually matter?12:42 Why LLMs regress toward average (and the Reddit problem)15:15 Falsely accused of "AI slop" for your own writing style21:36 "Automate your business with AI" — the wrong things to automate25:23 Dead internet theory: has AI writing already peaked?26:34 Why AI can't reason about truly novel, hypothetical situations28:37 Hemingway's unfinished-thought trick and "open-loop" thinking with AI35:06 Why weird, opinionated writing might be AI-proof44:49 Fitness's lost oral tradition: Charlie Francis, Louie Simmons, old forums47:03 Stoner, the trivium, and teaching without teaching48:06 Oral defense as the AI-proof assessment56:08 Research vs. coaching: the application gap (Norwegian 4x4, tabata)1:07:26 Will AI push us back toward hard physical skills?1:15:00 Where to find Jeb & Dean
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
Building a Fitness Empire: Business Lessons, Zone 2 & Recovery Trends with Don Saladino — #403
2026/09/08
Don Saladino is a New York-based coach and health entrepreneur who has trained A-list clients like Ryan Reynolds, Hugh Jackman, and Blake Lively since founding Drive495 in 2005.
Don Saladino has spent nearly three decades training A-list stars like Ryan Reynolds and Hugh Jackman — and in this episode, he shares the single business lesson he wishes he’d learned sooner. He and Dr. Mike also dig into why Don closed his $2M-overhead NYC gym, how tracking respiratory rate reshaped his approach to Zone 2 training, and the sobering personal loss that changed how he views performance enhancers.
Expect to learn why Don stopped over-certifying and started looking at what’s leaking in his business, how he built 17 years of trust with a client like Ryan Reynolds, the real financial toll of running a NYC gym (think $1M rent and $2M overhead), what tracking respiratory rate taught him about Zone 2 training volume, his honest take on performance enhancers at 49 (natural), and the personal loss that reshaped how he views unsupervised PED use, and much more.
Connect with Don:
WebsiteInstagramYouTubeEpisodes you'll enjoy next:
#402 — VO2 Max, Zone 2 Training & the Psychology of Human Performance — Ben Skutnik: Listen here#397 — How Elite Bodybuilders Think About Problem-Solving, Business and Nutrition with Coach Cliff Wilson: Listen hereEpisode Timestamps:
2:26 — #1 Business Lesson: Stop Over-Certifying, Start Looking at What’s Leaking5:43 — “Content Is King, Distribution Is the Kingdom”8:35 — Take Risks Early: Betting on Yourself Before Responsibilities Pile Up10:58 — Learning Business Over Breakfast: The NYC Advantage12:01 — The Art of Adding Value Without an Agenda13:32 — Working With Ryan Reynolds for 17 Years: Trust, Humility & Knowing You’re Replaceable21:12 — What It Really Takes to Work With High-Profile Clients26:26 — Actors vs. Athletes: Which Is Harder to Train?28:39 — Performance Enhancers: Don’s Honest Take at 49, Natural36:31 — Tracking Respiratory Rate & Rethinking Zone 2 Volume38:37 — Closing the NYC Gym & Pivoting to Digital43:35 — The Real Cost of Running a NYC Gym: $1M Rent, $2M Overhead44:32 — Business Lessons You Can’t Learn at Harvard46:09 — The “Integrated Wellness” Facility Trend: Is Anyone Actually Getting It Right?1:05:26 — The Rise of Recovery Studios: New Happy Hour or Legit Wellness?1:08:44 — A Personal Loss & a Stark Warning on Unsupervised PED Use1:16:27 — Where to Find Don Saladino
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
VO2 Max, Zone 2 Training & the Psychology of Human Performance — Ben Skutnik — #402
2026/08/31
Dr. Ben Skutnik, PhD, CSCS*D, NSCA-CPT*D, is an Assistant Professor of Kinesiology and Human Performance Lab Director at Butler University and Head of Nutrition Coaching at Power Athlete.
Dr. Ben Skutnik joins the show to separate fact from fad in aerobic training, debunking zone 2 hype and explaining why VO2 max matters but isn't everything.
Expect to learn why reading scientific literature is its own skill, how uncontrolled variables quietly derail hypertrophy and menstrual-cycle training research, why treating people as fragile backfires, why anecdote in human performance often outruns the research, how "closing the loop" with clients beats chasing mechanisms, what the Norwegian 4x4 method gets right (and what most zone 2 research gets wrong about training zones), and how to actually build VO2 max with the critical power model, and much more.
Connect with Ben:
Power Athlete Coach Bio
LinkedIn
Google Scholar
Episodes you'll enjoy next:
#400 — Build Aerobic Fitness Before Mitochondrial Peptides: AMPK, VO2 Max & Recovery — Dr. Dwayne Jackson: Listen here
#374 — Zone 2 Cardio: What the Science Really Says (Pros, Cons & Better Options) with Kristi Storoschuk: Listen here
Episode Timestamps:
1:46 — Why Ben was recommended for this conversation on cardiovascular and aerobic programming
7:31 — Reading scientific literature is a skill set of its own
14:05 — Hypertrophy training to failure and uncontrolled variables in research
16:27 — Debunking myths about training around the menstrual cycle
18:20 — Human resilience and the danger of treating people as fragile
22:09 — Why consistency beats trying to "hack" optimization
22:40 — Nutrition fear-mongering and overly restrictive diets
27:25 — Changing one variable at a time vs. the "kitchen sink" approach
29:55 — Why anecdotal evidence in human performance is often ahead of the research
34:48 — The ethics of placebo and "closing the loop" with clients
37:34 — The psychology of performance: the NFL kicker example
43:13 — The Norwegian 4x4 method and zone 2 training myths
46:40 — Why most zone 2 research relies on the wrong zone model
52:53 — HYROX, CrossFit, and Goodhart's Law in training
1:05:18 — Is VO2 max overrated? Performance vs. health tradeoffs
1:15:25 — Building VO2 max: interval protocols and the critical power model
1:26:02 — Life-changing results: taking deconditioned clients from VO2 max 18 to 35
1:30:09 — Where to find Ben Skutnik and his work at Butler University and Power Athlete
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
Psychedelics, Neuroplasticity and the Military-to-Spiritual Journey with Rick Alexander — #401
2026/08/24
Rick Alexander is a depth-psychological counselor, psychedelic practitioner, and interfaith spiritual care provider currently completing his Ph.D. in Mythology/Depth Psychology and a former Naval Special Operations combat medic.
Rick was a Special Operations combat medic until a single psychedelic experience shattered his worldview and sent him back to school to study psychedelic spiritual care. He and Dr. Mike dig into neuroplasticity windows, why “good trip/bad trip” is the wrong question, and what may really be happening in DMT space.
Expect to learn how a rough teenage salvia trip and a later psilocybin experience redirected Rick's entire career, what life is really like as a Special Operations Combat Medic supporting SEALs and Green Berets, why military training narrows emotional range and makes civilian re-entry so hard, how integration (not the trip itself) determines whether a psychedelic experience heals or destabilizes you, what the "third wave" of psychedelic science gets right that the DSM's "hallucinogen" label gets wrong, whether neuroplastic windows could help athletes learn skills faster, and what a brutal 5-MeO-DMT experience taught Rick about his own running form and breathing.
Connect with Rick:
Website
Instagram
Episodes you'll enjoy next:
#47 — Tools to Down-Regulate in Response to Stress (an earlier conversation with Rick Alexander): Listen here
#194 — The Pros and Cons of Psychedelic Compounds with Psychedelic Researcher Rebekah Senanayake: Listen here
Episode Timestamps:
2:49 – Rick's PhD progress and the psychedelic experience that redirected his career
3:38 – A rough first psychedelic experience with salvia at 18
4:46 – The psilocybin experience that "peeled back" his worldview
7:00 – Life as a Special Operations Combat Medic supporting SEALs and Green Berets
8:23 – How military training narrows emotional range and worldview
10:01 – Why veterans struggle to re-enter civilian life after specialized training
13:34 – The double-edged sword: psychedelics can destabilize as easily as they heal
14:32 – The "third wave" of psychedelic science and the flawed DSM "hallucinogen" label
23:49 – Integration: do you have time to process what comes up?
24:43 – "Psychedelic myth-making" and building a new personal mythology
31:05 – Could neuroplastic windows help athletes learn skills faster?
37:01 – Yogic energy channels (nadis) and psychedelics amplifying subtle perception
39:17 – How a brutal 5-MeO-DMT trip changed Rick's running form and breathing
56:16 – What's really happening in DMT space: Strassman, Gallimore, and "reality switch technologies"
59:43 – Henri Corbin's "psycho-cosmology": consciousness and reality as mirrored levels
1:06:45 – "Functional consequentialism": why you shouldn't dismiss someone else's experience
1:10:46 – Where to find Rick and his counseling and breathwork work
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
Build Aerobic Fitness Before Mitochondrial Peptides: AMPK, VO2 Max & Recovery — Dr. Dwayne Jackson — #400
2026/08/17
Dr. Dwayne Jackson is a health specialist, medical educator, scientist, and entrepreneur with a PhD in neurovascular physiology.
Mitochondrial peptides may be promising, but they cannot replace the aerobic base that makes their effects measurable. Dr. Dwayne Jackson explains AMPK and mitochondrial signaling, what MOTS-c and SS-31 can and cannot tell us, and why fitness data, training, and recovery come before any experimental compound.
Expect to learn how aerobic fitness supports strength and Strongman training, why lactate clearance and conditioning can become the rate limiter, what AMPK and mTOR signal, how kidney disease changed Dwayne’s perspective on aerobic capacity, where the evidence for MOTS-c and SS-31 is limited, how to design a more useful N-of-1 experiment, and why training, nutrition, recovery, COAs, and third-party testing come before experimental compounds.
Connect with Dwayne:
Website: drdwaynejackson.com
Google Scholar
Episodes you’ll enjoy next:
#396 — Are Your Peptides Illegal? — Rick Collins: A practical look at peptide science, regulation, and the gray market.
#393 — From Powerlifter to Trail Runner — Paul Oneid & Cody Miller: VO2 max, cardiac adaptations, and the transition from strength sports to endurance.
Episode Timestamps:
01:53 — Mitochondrial peptides and the aerobic-training foundation
03:19 — Peptides as training amplifiers, not replacements
04:22 — AMPK, mTOR and mitochondrial signaling
05:50 — Why aerobic fitness supports strength and Strongman training
08:12 — Conditioning, lactate clearance and the rate limiter for strength athletes
10:58 — Wingate tests and overlapping energy systems
15:12 — Kidney disease, mitochondrial dysfunction and aerobic collapse
21:22 — Hypertensive crisis, dialysis and recognizing a major fitness decline
24:48 — Kidney transplant recovery and rebuilding aerobic capacity
28:27 — The evidence and limitations behind mitochondrial peptides
34:55 — MOTS-c, AMPK activation and anecdotal HIIT performance
39:59 — SS-31, cardiolipin and mitochondrial efficiency
48:32 — Why training, nutrition and recovery come before peptides
58:40 — Using performance data to make an N-of-1 experiment more useful
1:01:22 — SS-31 before training, AMPK timing and recovery trade-offs
1:06:07 — SLU-PP-332, exercise mimetics and the gap in human data
1:09:17 — Peptide sourcing, COAs and third-party testing
1:12:02 — Genetics, response variability and sustainable performance
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
Episode 399: Urolithin A, Mitochondrial Health, and Nutrition for Pro Athletes — Dr. Emily Werner
2026/08/10
Emily Werner, PhD, RD, CSSD, IFNCP is Team Dietitian for the Philadelphia 76ers (NBA) and Philadelphia Flyers (NHL), and Nutrition Affairs Sport Lead at Timeline.
Dr. Emily joins Dr. Mike to unpack postbiotics, urolithin A, and why mitochondrial health matters for pro athletes and everyday people alike, digging into the real research behind Timeline's Mitopure and why chasing $200K gadgets rarely beats getting the fundamentals right.
Expect to learn what a postbiotic actually is and how urolithin A differs from other supplements, why old-school and new-school sports dietitians disagree on peptides and supplement fads, how chronic undereating quietly undermines performance in women's sports, what the current human performance research on urolithin A actually shows, how Mitopure is dosed and why urolithin A can't be reliably food-sourced, and why product quality and manufacturing integrity matter more than marketing claims, and much more.
Connect with Emily:
Website: https://www.eateliteperform.com/
Instagram: @emilywerner34
LinkedIn: https://www.linkedin.com/in/emily-n-werner-phd-rd-cssd-ifncp-4a820a97/
Episodes you'll enjoy next:
#377 — Methylene Blue for Mitochondria & Performance: Benefits, Dosing & Risks with Dr. Scott Sherr: Listen here
#382 — Creatine for Muscle, Bone, Brain & Longevity (Plus Caffeine, Dosing, and Safety) with Dr. Darren Candow: Listen here
Episode Timestamps:
2:21 Welcome & introductions
6:09 What is a postbiotic? Pre-, pro-, and postbiotics explained
7:09 Urolithin A: the postbiotic behind Mitopure
8:19 How Emily started consulting for Timeline
10:11 Old-school vs. new-school sports dietitians on supplements
13:53 Peptides, anecdata, and why athletes ignore the data
20:05 The hardest lesson: letting go when clients won't listen
21:15 Money, ego, and athletes chasing $200K wellness gadgets
24:53 Chronic undereating in women's sports
30:48 Nutrition's real job: keeping athletes available to play
33:19 Inside Mitopure: Timeline's flagship urolithin A product
35:06 Mitochondria, mitophagy, and why they matter as we age
38:16 Diet, fasting, and exercise as natural mitophagy triggers
43:36 What the performance research on urolithin A actually shows
53:19 Aging, aerobic capacity, and Emily's 101-year-old grandma
55:40 Mitopure dosing: how much urolithin A and when to take it
57:14 Why urolithin A can't be food-sourced (and can't be faked)
1:03:19 Why product quality and integrity matter in supplements
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
Getting Back to Nutrition Basics: Gut Health, Micronutrients & Training with Zach Moore
2026/08/04
Zach Moore is a nutrition and exercise coach based in southern Indiana, coaching clients online and in person.
Zach cuts through the noise of complicated programming and diet protocols to get back to what actually works — minimalist strength training, honest macro-setting, and paying attention to gut health and micronutrient status before chasing anything fancier.
Expect to learn how to build serious strength with far less training volume than you think, why chasing perfect programming conditions is often a waste of energy, how Zach sets carbohydrate and macro targets for real-world clients, when (and when not) to bother with micronutrient or gut testing, and why micronutrients matter even on restrictive or elimination diets, and much more.
Connect with Zach:
Website: zmoore.com
Instagram: @ZachMFitness
Episodes you'll enjoy next:
#388 — What Vinegar & Lifting Really Do To Your Gut: Listen here
#397 — Why Getting Better Never Gets Easier with Cliff Wilson: Listen here
Episode Timestamps:
02:37 Training in a garage gym during a heat wave
03:53 Grip strength, sweat & cold water immersion
06:32 Overthinking training & lessons from old-time strongmen
09:54 Minimalist strength training & the trap bar deadlift
15:13 Go-to lifts & why you must add muscle for body comp
17:42 Progressive overload & long-term strength gains
19:56 How too much program variety kills progress
27:06 Individualizing & dialing in training volume
30:42 Favorite upper & lower body exercises
35:46 Nutrition foundations: informed eating
38:10 Eating enough to fuel training & recomp
44:06 Determining carb needs & setting client macros
48:13 The insulin myth: do carbs turn into fat?
52:40 Meal balance, fat timing & digestion
55:34 Tracking micronutrients with Cronometer
58:13 Gut testing, carnivore & elimination diets
1:02:25 Sleep tips: circadian rhythm, light & temperature
1:04:39 The Shiftwave chair for stress downregulation & sleep
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
How elite bodybuilders think about problem-solving, business and nutrition with Coach Cliff Wilson
2026/07/27
Cliff Wilson is a physique coach with over 16 years of experience working with bodybuilders and physique athletes of every level, including 24 world champions and the current natural bodybuilding world champion.
Getting better doesn’t make hard things feel easier—it makes you capable of doing more. Cliff Wilson explains the mental skills behind elite physiques, why context beats internet absolutes, and how great coaches turn research, experience, and failure into better decisions.
Expect to learn why impulse control makes up 20–50% of physique coaching, why you have to learn to dribble before you try to dunk, why practitioners and social media commentators are not the same thing, why getting fitter never makes a true max effort feel easier, how context (not absolutes) explains wildly different carb intakes between world-class physique athletes, why most advanced bodybuilders eventually land back on a bro split, and what separates “collectors” of credentials from coaches who can actually integrate and apply what they know—and much more.
Connect with Cliff:teamwilsonbb.com (book: Becoming Unrivaled)Instagram: @cwteamwilson
Raw Intensity app (mentioned in the episode)
Episodes you'll enjoy next:
#323 — Natural vs. Enhanced Bodybuilding: An In-Depth Chat with Aaron Straker: https://flex-diet-podcast.simplecast.com/episodes/episode-323-natural-vs-enhanced-bodybuilding-an-in-depth-chat-with-aaron-straker
#167 — The Physiologic and Psychologic Benefit of Doing Hard Things: Akshay Nanavati of Fearvana: https://flex-diet-podcast.simplecast.com/episodes/episode-167-the-physiologic-and-psychologic-benefit-of-doing-hard-things-akshay-nanavati-of-fearvana-with-dr-mike-t-nelson
Episode Timestamps:
02:15 — The edited interview begins and Mike explains the unusual opening
02:49 — Why 20–50% of physique coaching is impulse control
05:19 — Skill levels: learn to dribble before trying to dunk
07:37 — Practitioners vs. social media commentators
10:45 — Why you cannot sidestep the hard parts of fat loss
12:44 — Getting fitter does not make a true max effort feel easier
14:04 — Context beats absolutes: 700 grams vs. 50 grams of carbs
19:26 — Slow thinking, pondering, and turning information into insight
21:57 — Giving clients autonomy dramatically improved results
25:18 — Range, cross-domain learning, and better problem-solving
27:03 — Using OODA loops to make better coaching decisions
28:24 — Why most advanced bodybuilders return to a bro split
31:42 — Low-volume training, outliers, and small-sample traps
44:01 — A surprising DNA result and the role of elite genetics
48:31 — Michael Phelps, elite rituals, and competitive mindset
50:43 — Why bodybuilding coaching skill may have declined
53:11 — Objectivity, Austin Stout, and the traits of great coaches
01:03:14 — Collectors vs. integrators: credentials are not application
01:08:07 — Cliff's Raw Intensity app and upcoming book Becoming Unrivaled
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
Are Your Peptides Illegal? — Rick Collins — #396
2026/07/22
Rick Collins, Esq., NSCA-CSCS, is a lawyer who defends the nutrition and fitness community, a partner at Collins Gann McCloskey & Barry PLLC, and General Counsel to the International Society of Sports Nutrition.
Peptides are everywhere right now, but most of what's sold online as BPC-157 or TB-500 is illegal — and the FDA is about to decide what happens next. Rick breaks down the science, the legal gray market, and why the military's new testosterone screening policy matters too.
Expect to learn what actually counts as a "peptide," how GLP-1 drugs normalized injectable medications and fueled the gray market, what the FDA's own scientists concluded about BPC-157 and TB-500, why Rick's caseload has shifted from steroids to 80-90% peptide cases, what a possible "experimental peptide" middle-ground category could look like, and what really happens when the FDA raids a peptide seller, and much more.
Connect with Rick:www.RickCollins.com
Episodes you'll enjoy next:
#371 — Peptides, TRT, GLPs & Bloodwork: How to Do It Safely (and What Most People Miss) with John Gorman: Listen here
#319 — Exploring the World of Peptides with Anthony Castore: Listen here
Episode Timestamps:
4:07 Rick's background as a lawyer and his standard legal disclaimer
6:14 What actually counts as a "peptide"
8:25 How GLP-1 drugs normalized injectable medications
10:44 Loss of trust in the FDA fuels the gray market
11:46 The rise of personal health autonomy
13:40 Two markets: the medical model vs. "bro science"
16:23 Inside the FDA Compounding Advisory Committee meeting
19:23 FDA scientists' verdict on BPC-157 and TB-500
20:49 Why the science on BPC-157 is still so thin
22:07 Prohibition logic: the black market will keep growing
25:47 A possible middle ground: an "experimental peptide" category
32:11 Rick's caseload shift — from steroids to 80-90% peptide cases
35:30 Why big pharma cares about tirzepatide and retatrutide knockoffs
42:28 Pete Hegseth and testosterone screening in the military
46:57 Why the new TRT policy may be "much ado about nothing"
49:23 Low testosterone's real, well-documented health risks
52:26 Richard Dawkins, The Selfish Gene, and biohacking against nature
57:12 The schism between orthodox medicine and biohacking
62:39 What happens when the FDA raids a peptide seller
63:30 Connect with Rick Collins
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
What Coaching Air Force Pilots Taught Me About Real Performance — Sam Brown — #395
2026/07/20
Samuel Brown, M.Ed., CSCS is a Cognitive Performance Specialist for the U.S. Air Force and a strength and conditioning professional who has worked everywhere from collegiate athletics to elite tactical units.
Sam spends his days training Air Force pilots and aircrew who run on nicotine, caffeine, and alcohol — and almost never turn off their nervous system. In this episode he reveals why the toughest operators need recovery just as much as intensity, and what years of coaching in Altus, Oklahoma taught him about real performance under extreme cognitive load.
Expect to learn what Air Force pilots are actually like to train, why the nicotine-caffeine-alcohol "trifecta" dominates military performance culture, how the physical act of flying itself takes a hidden toll through vibration and posture, why sympathetic nervous system domination cements poor posture and movement patterns, how Sam sneaks down-regulation into hard training sessions disguised as recovery work, and why resting heart rate might be a better performance metric than any wearable, and much more.
Connect with Sam:https://www.instagram.com/sambrownstrength
Episodes you'll enjoy next:
#312 — Optimizing Stress and Performance for Firefighters and Tactical Athletes with Dr. Drew Gonzalez: Listen here
#310 — Unpacking the Science of Sleep with Dr. Allison Brager: Listen here
Episode Timestamps:
01:59 – What Air Force Pilots Are Actually Like
07:21 – Back to Basics: Training with Minimal Equipment
10:13 – Breaking the Instagram Training Cycle
12:06 – Endurance Trends Among Pilots
17:05 – The Air Force Trifecta: Nicotine, Caffeine & Alcohol
20:31 – Physical Toll of Flying: Vibration, Posture & Injury
23:44 – Stress Cements Posture: The Sympathetic Domination Problem
28:06 – Down-Regulation Protocols After Training
30:47 – Hiding the Pill in the Peanut Butter
47:44 – Wearables & the Loss of Body Awareness
50:31 – Resting Heart Rate as the Performance Metric
52:14 – The GOAT Drill for Cognitive Load & Recovery
1:02:31 – Building a Culture of Buy-In & Program Integration
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
The Counseling Skills Nutrition Coaches Are Missing — Dr. Krista Scott-Dixon — #394
2026/07/13
Dr. Krista Scott-Dixon, PhD, is the author of the 700-page textbook Applied Nutrition Coaching and Counseling for Coaches.
Most nutrition coaches know their protocols — but very few have been trained in what to actually do when a client says something unexpected, breaks down, or simply won't follow the plan. Dr. Krista Scott-Dixon reveals the counseling techniques that most nutrition coaches have never learned — and why mastering them matters more than any protocol. She explains why over-optimized clients are often the most fragile, how AI is eroding the critical thinking skills coaches rely on, and what it really takes to translate complex science into simple, effective actions.
Expect to learn why LLMs are story-making machines that confidently get facts wrong, how the broken healthcare system is pushing patients toward fringe advice, what body awareness coaching actually looks like in practice, why Dunning-Kruger applies to both coaches and clients, how to help clients prepare better conversations with their doctors, and what makes coaching an irreplaceable human profession — and much more.
Connect with Krista:
Website: https://kristascottdixon.com/
Instagram: https://www.instagram.com/stumptuous
Facebook - https://www.facebook.com/coach.krista.scottdixon
1% Better Academy - https://onepercentbetteracademy.com/
Episodes you'll enjoy next:
#328 — Grit Gains: Building Mental Toughness and Resilience in Training with Ben Mayfield Smith: https://miketnelson.com/podcast/episode-328-grit-training-and-resilience-ben-mayfield-smith
#373 — The Future of Fitness + Healthcare: Coaches, Blood Work, and Client-Centered Models: https://flex-diet-podcast.simplecast.com/episodes/episode-373-the-future-of-fitness-healthcare-coaches-blood-work-and-client-centered-models-kevin-dineen-k12eNARO
Episode Timestamps:
02:02 The Dangers of AI for Health Research
03:40 LLMs as Story-Making Machines
04:35 Mike's AI Citation Fail & the 'Dead Internet' Theory
08:55 The Antidote: Getting Back to Basic Skills
09:55 Literacy, Critical Thinking & Health Literacy Crisis
16:55 The Broken Healthcare System & Why Patients Distrust Providers
18:20 Why Parents Seek Fringe Medical Advice for Their Kids
20:55 The Power of Simple Coaching Interventions
22:55 Coaching as Translation: Complex Science, Simple Actions
26:35 Teaching Clients Body Awareness & Self-Observation
28:55 Gym Culture & The Dissociative Society
30:55 When Clients Don't Know Why They Feel Bad
33:25 Helping Clients Prepare Better Conversations with Their Doctors
37:55 AI, Cortisol Grift & Bastardized Physiology
40:55 If It's So Easy, Show Me — Krista's Coaching Insight
45:55 Dunning-Kruger, Expertise & Learning to Question Everything
51:55 Decision-Making: Low B******t, Cool People, Meta Skills
56:55 Choosing Projects & Finding Your Authentic Fit
61:55 The Book: Who It's For & What It Covers
74:55 Coaching as a Human Profession (Not to Be Automated)
84:55 Sprinting, Scope of Practice & Knowing Your Clients
86:55 Where to Find Krista & Closing Thoughts
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
From Powerlifter to Trail Runner — Paul Oneid & Cody Miller — #393
2026/07/06
In this episode of the Flex Diet Podcast, I sit down with Paul Oneid, MS, MS, CSCS and Cody Miller for a conversation about rebuilding from injury and the transition from strength sports to endurance training.
Paul Oneid tore both quads and rebuilt himself from powerlifter to trail runner, with coach Cody Miller guiding the transition. They break down the emergent training approach, VO2 max and cardiac adaptations, and the mental side of suffering across strength sports and endurance.
In this episode, you'll learn:
How Paul's decision to move away from powerlifting and bodybuilding after tearing both quads
The emergent, responsive approach Cody used to build Paul's running base from scratch
Why cardiac structural adaptations (like resting heart rate drops) take months, not weeks
Cody's time-to-exhaustion model for structuring endurance intervals without needing lactate testing
Find Paul here:
https://masterathletic.com
https://coachescorneru.com
https://www.instagram.com/pauloneid/
Find Cody here:
https://hoopiestrength.com/
https://www.instagram.com/coach.cody.miller
Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter
Podcast reviews
Read Flex Diet Podcast podcast reviews
coachtimcaron2 2025/05/03
Top Notch
Dr. Mike Nelson’s Flex Diet Podcast is an absolute gem for anyone serious about optimizing performance, recovery, and longevity. What sets this show a...
ASM115 2023/07/16
Mike is top notch!
I have known Mike for years and haven even had the honor of being coached by him. I consider him to be one of the most reliable sources of health, fit...
drchris33 2023/02/11
Fantastic Podcast
Dr. Mike’s podcast is top notch! I have had the privilege to have done a fellowship with Dr Mike, trained in his garage gym, done the cold plunge in h...
Dr. Raymond T 2022/07/06
Nutrition
I learned about the podcast through the Flex Diet certification course and I have to say this is one of the best podcast on nutrition and health out t...
fysiologik 2021/11/01
Excellent
Great information and resource Dr Mike. Recommended listen : )
Sam Buff 2021/06/25
The Best
I’ve been listening to Dr Mike for some time now. Started with Iron Radio, now a fan of this Flex Diet pod. Bottom line: he’s the best in the biz. He ...
Jessicadepatie 2019/12/10
Next level podcast
Perfect bit sized podcast packed with info!
JJPharm 2019/12/09
Mike T
Tons of actionable items with very little fluff. Dr Mike is the man!
Waldman43 2019/12/03
Snack bites for the brain
Solid podcast. I have a few podcasts for longer listening, but Dr. Nelson’s podcast is excellent for that short commute each morning to work to learn ...
Jocelyn Awe 2019/11/30
Quick Facts
Short and to the point. Great information especially on those days where you just need to learn something more!
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