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 screening
2:52 How MRI works: magnets, noise, and safety
7:05 Open MRI, magnet strength, and image quality
9:05 MRI sequences, scan time, and diagnostic protocols
11:47 Why whole-body MRI is a limited screen
12:46 Incidental findings and downstream testing
13:57 High-risk screening, rare genetic conditions, and lung limits
17:53 Sensitivity, specificity, and standard screening
24:15 PET/MRI and where whole-body imaging has a clinical role
27:05 Why MRI and PET/CT systems are expensive to install
31:59 MRI safety, implants, and pacemakers
36:36 CT versus MRI: why one scan can lead to another
38:52 Whole-body CT, radiation, and its limits
43:47 Back-pain scans: why an image may not explain symptoms
51:44 Physical therapy, surgery, and warning signs
58:46 Evaluating evidence for peptides, stem cells, and biologics
1:05:47 Choosing an orthopedic surgeon for athletic goals
1:15:24 DEXA versus MRI for body-composition trends

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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.king
• Website: getfluxed.ca

Connect with Jeb:

• Website: foodonthemind.com
• Instagram: @jebstuartjohnston
• Newsletter: 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 here
• S2 Ep 28 — High Flux Model and More for Fat Loss and Client Coaching, an interview with Dean Guedo and Jeb Johnston of StrongerU: Listen here

Episode Timestamps:

• 01:35 Welcome to the podcast & guest introductions
• 03:15 Should you disclose your AI use?
• 06:32 Deepfake video vs. AI-assisted writing: a different risk category
• 07:53 AI's exponential growth and the "singularity" question
• 11:11 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 style
• 21:36 "Automate your business with AI" — the wrong things to automate
• 25:23 Dead internet theory: has AI writing already peaked?
• 26:34 Why AI can't reason about truly novel, hypothetical situations
• 28:37 Hemingway's unfinished-thought trick and "open-loop" thinking with AI
• 35:06 Why weird, opinionated writing might be AI-proof
• 44:49 Fitness's lost oral tradition: Charlie Francis, Louie Simmons, old forums
• 47:03 Stoner, the trivium, and teaching without teaching
• 48:06 Oral defense as the AI-proof assessment
• 56:08 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

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:

• Website
• Instagram
• YouTube

Episodes 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 here

Episode Timestamps:

• 2:26 — #1 Business Lesson: Stop Over-Certifying, Start Looking at What’s Leaking
• 5:43 — “Content Is King, Distribution Is the Kingdom”
• 8:35 — Take Risks Early: Betting on Yourself Before Responsibilities Pile Up
• 10:58 — Learning Business Over Breakfast: The NYC Advantage
• 12:01 — The Art of Adding Value Without an Agenda
• 13:32 — Working With Ryan Reynolds for 17 Years: Trust, Humility & Knowing You’re Replaceable
• 21:12 — What It Really Takes to Work With High-Profile Clients
• 26:26 — Actors vs. Athletes: Which Is Harder to Train?
• 28:39 — Performance Enhancers: Don’s Honest Take at 49, Natural
• 36:31 — Tracking Respiratory Rate & Rethinking Zone 2 Volume
• 38:37 — Closing the NYC Gym & Pivoting to Digital
• 43:35 — The Real Cost of Running a NYC Gym: $1M Rent, $2M Overhead
• 44:32 — Business Lessons You Can’t Learn at Harvard
• 46:09 — 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 Use
• 1:16:27 — Where to Find Don Saladino

Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter