All episodes

A 22-Year-Old Athlete and a Form Nobody Would Sign (Mystery Case)

Sunday Morning Protocol 2049: A Halloween Story About Optimization

How Much Cardio Should You Do? How Much is Too Much?

How Much Lifting is Enough? How Much is Too Much?

Where did the advice to not lift heavy weights come from?

Is It Safe to Train When the Air Is Full of Wildfire Smoke?

Do You Need a Calorie Surplus to Build Muscle? | Dr. Eric Helms

Is Obesity A Muscle Problem?

Who Needs Testosterone, and Who's Not Getting It I Signal Episode 4

Your Fat Has a Storage Limit

Lifting and longevity: is 1 hour a week really the limit? Plus GLP1s and mood, training with ME/CFS, and Protein vs. Calories

The FDA Voted for 6 Peptides. Its Own Scientists Said No

The Man Who Couldn’t Stop Gaining Weight | A Medical Mystery

The Protein Scaries: What the Research Says About Your Kidneys, Cancer, Bones, and Body Fat

Is It Really Just Calories In, Calories Out? Metabolism, Insulin, Hormones and Why Counting Fails

Is Obesity a Willpower Problem? The Biology of Weight, Diets, and GLP-1s

Direct Line (Free): GLP-1 Muscle Loss and Creatine, Bulking vs Cutting, One-Hour Training, & Detraining

Menopause Part 4: Training, Protein, Cortisol, Hormone Therapy, & Bone Density

Menopause Part 3: Body Composition, Bone, Brain, & the Fitness Changes (The Data vs the Influencers)

Menopause, Part 2: The 2,000-Year-Old Lie About Women and Exercise

Menopause, Part 1: What It Actually Is and the 24-Year WHI Correction

Is Creatine Causing Your Shin Pain? + Splitting Training, Endometriosis for Lifters | Direct Line · May 2026

What’s Actually Driving Your Testosterone Down? | Signal Ep 3

Progressive Loading Part 3: Why the Novice / Intermediate / Advanced Framework Doesn't Work, and What to Do Instead

Is Your Testosterone Actually Low? Why Higher Testosterone Doesn't Do What You Think | Signal Ep 2

Direct Line April 2026: Stopping Ozempic and Lifting With Osteopenia

Is the Testosterone Crisis Real? The Numbers Behind the Headlines | Signal Ep 1

Medical Mystery: The Man Who Got Weaker When He Started Training

Overtraining Syndrome: Causes, Diagnosis, and What's Actually Going On

Episode #391: VO2 Max vs. Cardiorespiratory Fitness, GLP-1 Costs, and the 10,000-Step Myth | Direct Line March 2026 (Free)

Episode #390: Why Your Waist Matters More Than Your Weight — The Science of Visceral Fat

Episode #389: Your Liver Enzymes Are Elevated — But It Might Not Be Your Liver

Episode #388: Muscle Imbalances, Red Meat Risk, and the Science of Body Fat Set Points

Episode #387: The Valsalva Maneuver- Blood Pressure & Safety in Lifting

Episode #386: Longevity Myths- Biological Clocks, GLP-1 Muscle Loss, and What Actually Predicts Lifespan

How-To Fix Your Stalled Progress (Strength Edition)

Episode #385- Why Grip Strength Predicts Death (And Why You Shouldn't Train It)

Episode 384: The Paralyzed Personal Trainer (Mystery Case)

Episode #383: Scientific Populism vs. Consensus - The 2026 Food Pyramid

Trailer: The Fiber Action Plan is Here

Episode 382: The Trial of Big Food

Episode #381: How a Supplement Sent a Soldier to the Hospital- A Medical Mystery

Episode #380: The Peptide Market Audit: Injury Healing or Biohacking Hype?

Ozempic & Alcohol, The Trap Bar Myth, and A Medical Mystery | Barbell Medicine AMA Teaser

START HERE: The Cholesterol Action Plan Series

Episode 379: Menopause Myths, Cortisol Belly, & The Truth About IUDs

Episode #378: Bulletproof or Broken- Why 'Perfect Form' Is a Lie

Episode 377: GLP-1 Anti-Obesity Medications Update-Efficacy, Muscle Risk, and Future

Episode #376: Cycle Syncing, Cardio Myths, and Iron Deficiency: A Barbell Medicine Review of Diary of a CEO's Viral Claims

Episode #375: The Sarcopenia Deep Dive- Why It's Not Just Muscle Loss (And How to Stop It)

🔓 PLUS PREVIEW: When to Push Through Pain, Pre-Exhaustion Training, and Conquering Cravings

Q&A: Cholesterol Lowering, Volume vs. Intensity For Hypertrophy Volume, Zone 2 Efficiency, and More

Episode #374: Mental Strategies: Neuroscience, Visualization, and Developing Resilience with Anne-Sophie Fluri

Q&A Deep Dive: Measuring Fat Loss, Testosterone vs. GainzZz, the Carnivore Diet, and More

Episode #373: Deadlift Data- The Truth About Sumo vs. Conventional, New Study Finds Hard Cardio 9x Better, and Ozempic's Muscle Secret

Bonus Episode: The Limitless Human: 80-Year-Old Ironman, Golf’s Eligibility Crisis, and The Epigenetic Power of Dads

Bonus Preview: Lead in Protein, Training Myths, and Cutting Weight

Episode #372: Smells Like Teen Spirit

Bonus Episode: Overcoming Plateaus, Running, DOMS, Ibuprofen and GainzZz, and More

Episode #371: Q/A- Optimal Fitness Standards, GLP-1s, "Race-Based" health metrics, and More!

Bonus Episode: Can Your Cholesterol Be TOO Low? Why Starting is Hard, & Your Cardio Time-Hack

Episode #370: Dr. Sohee Carpenter on High-Intensity Circuits vs. Traditional Lifting, New Research, and Coaching Her Mom

Bonus Episode: Dr. Feigenbaum on Volume vs. Intensity, Training Frequency, Peptides, and More!

Episode #369: The 2025 Blood Pressure Update

Episode #368: The Rundown (4)

Episode #367: Training Load ft. Dr. Franco Impellizzeri

Bonus Episode: Vaccinations and Exercise, Deadlifts For Hypertrophy, and Recovery from Disc Herniations

Episode #365: Cycle Syncing, Fasted Cardio, The Pink Tax and More ft. Dr. Lauren Colenso-Semple

Bonus Episode: Zone 5 Training, Maintaining Strength, Magnesium Supplements, and More!

Episode #364: Polycystic Ovarian Syndrome (PCOS)

Episode #363: September 2025 Research Review (Lifting and Fatigue, Injury Risk w/ Breastfeeding, Food Processing, and More!)

Bonus Episode: Stretching, Range of Motion, Tiger Woods x BBM, Low Back Pain, and More!

Bonus Episode: Dr. Feigenbaum Talks Novice Training, Weight Class Decisions, Training Frequency, and More!

Episode #362: Weighted Vests

Bonus Episode: Dr. Baraki on Pain

Episode #361: Lipedema

Bonus Episode: Warm-Ups

Episode #360: The Rundown #3 (Bionic knees, Raycin beats the boys, feats of strength, and more!)

Episode #359: Fever, Rapid Heart Rate, and Difficulty Swallowing in 22-Year-Old Bodybuilder (Medical Mystery)

Episode #358 :July 2025 Research Review (A New Twist On Supersets, CrossFit Injuries, and Too Much Cardio?)

Episode #357: 5 Nutrition Controversies Explained (Eggs, CICO, Cane Sugar, and More!)

Episode #356: The Rundown (Mattie Rogers' in the hospital, CRISPR, NBA and Achilles injuries, and More)

Episode #355: Deadlifting and Biceps Tendon Rupture Risk

Episode #354: Man Collapses 50-Meters From The Finish Line (Medical Mystery)

Episode #353: June 2025 Research Review (Heavy Walkouts, Zone 2 Definitions, Exercise and Cancer)

Episode #352: The Rundown (Djokovic, RFK Jr. and Nutrition, SkinnyTok, UPF at lunch, and more)

Episode #351: Trouble on The Tee Box

Episode #350: Progressive Overload II (How-To Get The Most From Training)

Episode #349: Pilates

Episode #348: 18-Year Old Rower With Chest Pain

Episode #347: May 2025 Research Review

Episode #346: Direct To Consumer Lab Testing

Episode #345: Hip Pain, What Do? (Assessment, Plan, and Monitoring)

Episode 344: Man Has A Seizure While Lifting (Mystery Case)

Episode #343: Rise in Colon Cancer, LDL Elevations, Does Strength=Size, and What Do Doctors Know About Nutrition?

Episode #342: Avoiding DOMS, Sudafed, Food Matrix, and Training on GLP1ra's

Episode #341: Irritable Bowel Syndrome (IBS) and Diet, Quack Watch, and More!

Episode #340: Woman With Severe Abdominal Pain After Sit-Ups

Episode #339: March 2025 Research Review

Episode #338: Who Loses Weight And Why