Episodes
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A 22-Year-Old Athlete and a Form Nobody Would Sign (Mystery Case)
A 22 year old soccer player with no symptoms walks into a clinic for a routine sports physical and walks out being told to quit his sport. Dr. Baraki takes this mystery case blind and we hand him the pieces one at a time: the EKG, the echocardiogram, the cardiac MRI, the Holter monitor, the...
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Sunday Morning Protocol 2049: A Halloween Story About Optimization
A Halloween story about a man who does every wellness protocol, then an honest grading of each one. Dr. Jordan Feigenbaum tells the story of Dale Mercer, Unit 4471, who lives through a fully optimized Sunday in the year 2049: morning light panels, cold plunges, a 31-capsule supplement tray,...
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How Much Cardio Should You Do? How Much is Too Much?
How much cardio should you do, and does more of it ever become harmful? Cardiorespiratory fitness keeps improving with training load and nobody has found a ceiling. Getting fitter keeps lowering mortality risk as far out as anyone has measured. The one dose dependent harm that survives scrutiny…
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How Much Lifting is Enough? How Much is Too Much?
How much resistance training do you actually need, and is there a point where more stops helping? We trace the "lift weights twice a week" recommendation back to the 1989 study it came from, which found that three days beat two, and to the citation loop that turned it into a guideline anyway.…
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Where did the advice to not lift heavy weights come from?
Nearly every warning you've heard about lifting weights was written down before anybody checked it. We trace where those warnings came from, starting with a Harvard student in 1854 and ending with a curve on a graph that's being used today to argue you can lift too much. Along the way: the men…
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Is It Safe to Train When the Air Is Full of Wildfire Smoke?
Parts of the country now get a few weeks of wildfire smoke every year, and the obvious question is whether there is a point where the air is bad enough that the workout costs you more than it gives you. We went and looked. There is a real number, it comes from about 1.5 million people, and it is...
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Do You Need a Calorie Surplus to Build Muscle? | Dr. Eric Helms
Most lifters have been told they need to eat in a Calorie surplus to build muscle. That rule has always come with a list of exceptions: unless you're new, unless you're carrying extra body fat, unless you're coming back from time off. Dr. Eric Helms joins Dr. Jordan Feigenbaum to work out what…
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Is Obesity A Muscle Problem?
Muscle is where most of the glucose goes, and muscle insulin resistance is the first thing that breaks on the road to type 2 diabetes. Both of those are true, and neither one means that building more muscle is the treatment for obesity. This episode works through what actually decides whether a...
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Who Needs Testosterone, and Who's Not Getting It I Signal Episode 4
Most men who start testosterone never needed it, and some who genuinely do never get treated. In the final episode of the Signal series, Dr. Jordan Feigenbaum and Dr. Austin Baraki work through who actually needs testosterone replacement, who got sold it, and what the evidence says about the…
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Your Fat Has a Storage Limit
In 2004 a surgeon removed about ten kilograms of fat from fifteen women and measured everything that mattered. Nothing improved. Four years later, it still hadn't. That result should have ended an argument about body fat. Instead the argument got more specific, and the version you've heard most...
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Lifting and longevity: is 1 hour a week really the limit? Plus GLP1s and mood, training with ME/CFS, and Protein vs. Calories
A popular paper claimed the longevity benefit of lifting disappears once you train more than an hour a week. It's a real paper, but the claim is a misread. This is the free cut of this month's Direct Line, where Drs. Feigenbaum and Baraki also take on whether GLP-1s affect your mood, the "same...
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The FDA Voted for 6 Peptides. Its Own Scientists Said No
An FDA advisory committee just voted to open a legal compounding supply line for six of seven peptides, including BPC-157 and TB-500, over the objection of the FDA's own scientists, who recommended against all seven. Dr. Jordan Feigenbaum walks through what the Pharmacy Compounding Advisory...
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The Man Who Couldn’t Stop Gaining Weight | A Medical Mystery
A previously healthy 21-year-old shows up with seven months of headaches and 30-plus pounds of weight gain he can’t explain. He’s eating the same and training more, and the scale climbs anyway. We hand the case to Dr. Austin Baraki cold and work it in real time: the exam, the labs, the MRI, and…
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The Protein Scaries: What the Research Says About Your Kidneys, Cancer, Bones, and Body Fat
Every couple of years a new headline warns that the protein you eat is quietly hurting you. This year the target is your kidneys. Before that it was cancer, then your bones, then the claim that your body can only use twenty or thirty grams of protein at a meal. In this episode, Dr. Jordan...
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Is It Really Just Calories In, Calories Out? Metabolism, Insulin, Hormones and Why Counting Fails
Is weight loss really just Calories in, Calories out? The equation is true, but "just count your Calories" is bad advice for most people, and almost every objection to it is pointing at something real. In part two of our energy balance series, Jordan Feigenbaum takes the biggest "it's not…
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Is Obesity a Willpower Problem? The Biology of Weight, Diets, and GLP-1s
Obesity roughly tripled in about 60 years, and the genes didn't change in that time. So if body weight isn't a willpower problem, what is it? Dr. Jordan Feigenbaum and Dr. Austin Baraki walk through what actually sets your weight: the adoption and twin studies behind the genetics, the "defended...
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Direct Line (Free): GLP-1 Muscle Loss and Creatine, Bulking vs Cutting, One-Hour Training, & Detraining
Once a month we answer Barbell Medicine Plus subscribers’ questions on the Direct Line. This is a free look at June’s episode. We start with GLP-1 drugs and muscle: why DEXA overstates the loss, what resistance training actually does, and whether creatine is worth taking. Then whether bulking and...
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Menopause Part 4: Training, Protein, Cortisol, Hormone Therapy, & Bone Density
Is there really a “menopause-specific” way to train, eat, and supplement — or is most of it marketing? In the finale of our 4-part menopause series, Drs. Jordan Feigenbaum and Austin Baraki go straight to the evidence on building muscle and bone before, during, and after the transition. We cover...
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Menopause Part 3: Body Composition, Bone, Brain, & the Fitness Changes (The Data vs the Influencers)
Most women in 2026 are told menopause affects everything, the weight, the belly fat, the bones, the heart, the brain, and that the fix is hormones, supplements, and a proprietary protocol. The data tell a different story. Menopause does some of it, but not all of it. In this episode, Dr. Jordan...
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Menopause, Part 2: The 2,000-Year-Old Lie About Women and Exercise
The story goes that hard exercise is risky for women, and that the idea is ancient. Both halves fall apart on contact. In this solo episode, Dr. Jordan Feigenbaum follows the claim that physical effort harms the female body across twenty centuries, and shows that almost every version of it…
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Menopause, Part 1: What It Actually Is and the 24-Year WHI Correction
In 1889 a French physiologist injected himself with guinea pig and dog testicle extract and published a claim of self-rejuvenation in The Lancet. That announcement kicked off a 200-year medicalization of menopause that ran through leeches and bromides, Premarin, the 2002 Women's Health…
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Is Creatine Causing Your Shin Pain? + Splitting Training, Endometriosis for Lifters | Direct Line · May 2026
This is the free preview of the May 2026 Direct Line, our monthly AMA for Barbell Medicine Plus subscribers. Three reader questions answered in full. We open with a mid-30s woman with bilateral shin pain and exertional foot numbness who started creatine a month ago and is asking whether the...
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What’s Actually Driving Your Testosterone Down? | Signal Ep 3
Most cases of low testosterone in modern men are not a problem with the testes. The number is downstream of body composition, sleep, and energy availability. The wellness-clinic algorithm walks past every one of them. Jordan and Austin walk through what actually drives men’s testosterone down…
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Progressive Loading Part 3: Why the Novice / Intermediate / Advanced Framework Doesn't Work, and What to Do Instead
Three weeks of stalled squats. The conventional answer is to switch programs because you've crossed into intermediate territory. The data says something else. In Part 3 of the Progressive Loading series, Dr. Jordan Feigenbaum and Dr. Austin Baraki walk through why the standard novice /…
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Is Your Testosterone Actually Low? Why Higher Testosterone Doesn't Do What You Think | Signal Ep 2
Out of 32 symptoms commonly attributed to low testosterone, only 3 actually correlate with it. All three are sexual. The other 29 — fatigue, brain fog, low mood, weight you can't lose, feeling not quite like yourself — are real, but they are produced by something else, and the wellness-clinic...
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Direct Line April 2026: Stopping Ozempic and Lifting With Osteopenia
Stop a GLP-1 and about two thirds of the weight loss comes back within a year. Three randomized withdrawal trials (SURMOUNT-4, STEP 1 extension, STEP 4) and a new BMJ 2026 systematic review of 37 RCTs and nearly 10,000 adults all land on the same signal. The cardiometabolic benefits, blood...
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Is the Testosterone Crisis Real? The Numbers Behind the Headlines | Signal Ep 1
Every week there's a new headline saying men are losing testosterone. A quarter of men now start testosterone replacement therapy without ever getting their blood tested. The supplement aisle is full of boosters that either do nothing or contain undisclosed steroids. And the lab test that gets...
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Medical Mystery: The Man Who Got Weaker When He Started Training
A 43-year-old man starts exercising and ends up in the ER with a CK over 100x the upper limit of normal. His doctor says it’s from training. We don’t think so. In this episode, Dr. Jordan Feigenbaum and Dr. Austin Baraki walk through the full case — history, labs, diagnosis, and what actually…
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Overtraining Syndrome: Causes, Diagnosis, and What's Actually Going On
In 2022, researchers conducted the most rigorous systematic review ever performed on overtraining syndrome — looking specifically for controlled studies that documented a human transitioning from a healthy training state to an overtrained state. Zero studies met those criteria. The word...
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Episode #391: VO2 Max vs. Cardiorespiratory Fitness, GLP-1 Costs, and the 10,000-Step Myth | Direct Line March 2026 (Free)
In this free preview of the March 2026 Direct Line AMA. Drs. Feigenbaum and Baraki cover: VO2 max versus cardiorespiratory fitness for longevity (are Peter Attia’s targets evidence-based? — with Goodhart’s Law and the JAMA evidence), what GLP-1 medications actually cost now via manufacturer...
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Episode #390: Why Your Waist Matters More Than Your Weight — The Science of Visceral Fat
You can have a completely normal BMI and be on your way to cardiovascular disease, type 2 diabetes, and metabolic syndrome without triggering a single alert on a standard health screening. The fat that predicts metabolic risk most accurately isn't the fat your scale or your doctor is tracking.…
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Episode #389: Your Liver Enzymes Are Elevated — But It Might Not Be Your Liver
A fit, healthy 39-year-old was nearly sent for a liver biopsy. The cause? Was it that he went to the gym before every blood draw or because his supplement was throwing his labs off?. Dr. Jordan Feigenbaum and Dr. Austin Baraki break down the blind spot that sends thousands of healthy athletes…
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Episode #388: Muscle Imbalances, Red Meat Risk, and the Science of Body Fat Set Points
In this special preview of the Barbell Medicine Plus Direct Line, Dr. Jordan Feigenbaum and Dr. Austin Baraki move past the fitness basics to tackle high-level technical nuances. We dive into the persistent myth of "muscle imbalances" and why your asymmetry might actually be a functional feature…
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Episode #387: The Valsalva Maneuver- Blood Pressure & Safety in Lifting
Most doctors, trainers, and "safety-first" influencers warn that holding your breath while lifting is a dangerous habit that could lead to a stroke or heart failure. By looking back at the 300-year history of the Valsalva maneuver—from a 1704 ear treatment to the "boogeyman" blood pressure…
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Episode #386: Longevity Myths- Biological Clocks, GLP-1 Muscle Loss, and What Actually Predicts Lifespan
The longevity industry is now worth over $100 billion per year. From DNA methylation clocks to multi-cancer blood tests and GLP-1 medications, the promises are bold. But what actually predicts lifespan? In this episode, Dr. Jordan Feigenbaum and Dr. Austin Baraki break down the science behind...
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How-To Fix Your Stalled Progress (Strength Edition)
Lifting more weight doesn't always mean you've gotten stronger. In this foundational session, Dr. Jordan Feigenbaum and Dr. Austin Baraki introduce the Fitness-Fatigue Model to explain why "stalled" progress is often just a temporary masking of strength by accumulated fatigue. By learning to...
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Episode #385- Why Grip Strength Predicts Death (And Why You Shouldn't Train It)
Can a simple one-second squeeze predict your risk of cardiovascular disease, cognitive decline, and all-cause mortality? Dr. Jordan Feigenbaum and Dr. Austin Baraki explore why grip strength has become the go-to metric for the longevity industry and why most people are interpreting the data...
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Episode 384: The Paralyzed Personal Trainer (Mystery Case)
Dr. Feigenbaum and Dr. Baraki walk through the clinical workup of a 24 year old male presented with persistent weakness in his foot following weight loss of 22 pounds in two weeks. What could've possibly caused this? The discussion pivots to the science of how fast one should lose weight. While...
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Episode #383: Scientific Populism vs. Consensus - The 2026 Food Pyramid
In this episode, Dr. Jordan Feigenbaum and Dr. Austin Baraki dissect the federal government’s 2026 Food Pyramid Reset and its radical shift in nutrition policy. They explore the history of industry lobbying that shaped previous guidelines and evaluate whether the new emphasis on protein and…
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Trailer: The Fiber Action Plan is Here
Fiber is the most underutilized tool in human nutrition. While the internet is currently buzzing about the new food pyramid and debating processed foods versus beef tallow, most people are missing the actual structural levers that dictate health and performance. Today, we are launching the…
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Episode 382: The Trial of Big Food
For decades, the health and fitness industry has blamed rising obesity rates on a lack of individual willpower and "poor choices." However, a landmark lawsuit in San Francisco argues that the modern food environment is a public nuisance engineered by food giants using a literal tobacco playbook.…
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Episode #381: How a Supplement Sent a Soldier to the Hospital- A Medical Mystery
A 23-year-old soldier presents with hypertensive urgency and acute kidney injury. He thought he was doing everything right for his health—so what caused his system to fail? Dr. Feigenbaum and Dr. Baraki break down the clinical evidence and the surprising lab results. Timestamps [00:00]…
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Episode #380: The Peptide Market Audit: Injury Healing or Biohacking Hype?
Biohackers and longevity clinics claim peptides are a side-effect-free sniper rifle for fat loss and injury recovery, but the reality is often buried in failed clinical trials and regulatory bans. Many popular compounds like BPC-157 have never undergone a single randomized controlled trial in...
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Ozempic & Alcohol, The Trap Bar Myth, and A Medical Mystery | Barbell Medicine AMA Teaser
Experiencing a pins-and-needles sensation on a run or fearing the straight bar deadlift shouldn't be your fitness journey's bingo card. Many trainees abandon effective habits due to false narratives regarding physiological signals or myths regarding back safety. We break down the clinical reality...
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START HERE: The Cholesterol Action Plan Series
Welcome to the Barbell Medicine Cholesterol Action Plan. Cardiovascular disease is the #1 killer globally. We just released a massive 6-part audio series and written guide to fix that. It covers ApoB vs LDL, the CAC score paradox, the P:S diet ratio, and Plaque Regression. The full series is...
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Episode 379: Menopause Myths, Cortisol Belly, & The Truth About IUDs
The wellness industry wants you to believe that menopause renders you fragile, fasting creates "cortisol belly," and birth control is silently destroying your skeletal health. These claims aren't just scientifically inaccurate; they act as "nocebo" barriers that scare women away from effective...
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Episode #378: Bulletproof or Broken- Why 'Perfect Form' Is a Lie
Bulletproof or Broken- Why 'Perfect Form' Is a Lie Episode Summary In this comprehensive episode, we dismantle the pervasive myth that the human body is a fragile machine susceptible to catastrophic injury from minor technique flaws. This narrative, often perpetuated by social media influencers...
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Episode 377: GLP-1 Anti-Obesity Medications Update-Efficacy, Muscle Risk, and Future
Episode Summary: The Cardiometabolic Revolution of Semaglutide, Tirzepatide, and Beyond This episode provides a comprehensive, evidence-based update on GLP-1 receptor agonists (anti-obesity medications), featuring Dr. Jordan Feigenbaum, Dr. Austin Baraki, and Dr. Spencer Nadolsky. The hosts…
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Episode #376: Cycle Syncing, Cardio Myths, and Iron Deficiency: A Barbell Medicine Review of Diary of a CEO's Viral Claims
Cycle Syncing, Cardio Myths, and Iron Deficiency: A Barbell Medicine Review of Viral Claims Episode Summary: Debunking Women's Health Claims and Setting Optimal Targets In this in-depth episode, Dr. Jordan Feigenbaum, joined by Dr. Lauren Colenso-Semple and Dr. Austin Baraki, breaks down the…
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Episode #375: The Sarcopenia Deep Dive- Why It's Not Just Muscle Loss (And How to Stop It)
Episode Summary: Dynapenia, Motor Neurons, and the Firewall In this episode, Dr. Jordan Feigenbaum and Dr. Austin Baraki redefine sarcopenia, shifting the focus from simple age-related muscle size loss (atrophy) to the more critical loss of muscle strength and power (dynapenia), a process that...