Iron Culture presented by MASS

Trexler and Helms step back from training specifics to talk about how science gets interpreted, communicated, and applied. Trexler opens with two anecdotes that exposed a blind spot in his own communication — a one-minute clip of a talk on the Minnesota starvation experiment that drew online backlash, and a classroom tangent on macaque calorie-restriction research that a colleague worried could nu...

Trexler and Helms dig into training frequency and hypertrophy, prompted by a wave of recent discussion and two new papers: a new original study comparing three weekly sessions of three sets against one session of nine, and a new preprint from an independent research team utilizing the openly available data from Pelland's previously published meta-regression. They trace the long history of the freq...

In this episode, Eric Helms and Steve Hall explore the nature of aging, the importance of self-awareness, and practical insights into nutrition and training for bodybuilders.  They share personal stories, scientific perspectives, and coaching tips to help listeners optimize their health and performance. Catch new Iron Culture episodes every Tuesday at 5:30 pm eastern time! Be sure to use code "MRR...

This episode looks at bodybuilding before steroids became widespread, arguing that the era is far more useful (and more complicated) than the usual "pure, simple, natty golden age" story. Drs Eric Helms and Conor Heffernan break down how strength sport, judging standards, gym access, and culture shaped physiques from the 1940s through the 1950s. The big takeaway is that early bodybuilding was not...

Bodybuilders are laser-focused on retaining as much muscle as possible while dieting, and for very good reason. In that context, the smallest details matter. But what about everybody else?  This episode explores a hot take on weight loss, lean mass loss, and why the usual fear of losing muscle may be overstated in the context of successful long-term weight loss. Drs Eric Helms and Eric Trexler bre...

In this episode, Eric Helms and Eric Trexler share their current approaches to diet, training, and supplementation, emphasizing pragmatic strategies, individualization, and the importance of evidence-based practice. They discuss how constraints, habits, and intrinsic motivation shape their approaches to fitness, offering valuable insights for both athletes and everyday lifters. Catch new Iron Cult...

In this episode, Eric Helms and Steve Hall discuss training strategies, auto-regulation, the role of cardio in bodybuilding, and practical techniques for efficient training.  They share insights from their recent training camps and personal experiences to help listeners optimize their workouts and recovery.   Catch new Iron Culture episodes every Tuesday at 5:30 pm eastern time! Be sure to use cod...

In this episode, Eric Helms and Richard Collins explore the art and science of coaching, emphasizing the importance of motivation, rapport, and tailored strategies in achieving long-term success in fitness and bodybuilding. In this episode, Richard shares his extensive experience in physique sport coaching, mental performance training, and how athletes and coaches can optimize their mindset and pr...

In this episode, Eric Trexler and Eric Helms explore the energetic cost of building human skeletal muscle, discussing recent research, practical implications, and misconceptions about muscle growth and energy expenditure. Relevant papers: https://pubmed.ncbi.nlm.nih.gov/31482093/ https://pubmed.ncbi.nlm.nih.gov/37914977/ https://www.biorxiv.org/content/10.64898/2026.08.17.745156v1.full.pdf Catch n...

Trexler and Helms dig into sleep and how it intersects with body composition and supplementation. They open on the sleep-and-lifting landscape, then work through the frequently cited 2010 study on insufficient sleep and fat loss, laying out its design and the details behind its dramatic-sounding numbers. From there they discuss what the broader literature does and doesn't establish, the acute effe...

Trexler and Helms dig into Helms's new MASS article, "Are studies on untrained lifters irrelevant to trained lifters?" It's built around a new umbrella review by Andy Fry and colleagues. The recurring internet claim is that most exercise research is done on untrained people, so a trained lifter is "built different" and the findings don't apply. The hosts unpack why that's mostly wrong. They start...

In this episode, Eric Helms and Steve Hall explore the nuances of body recomposition, optimal bulking and cutting strategies, and the science behind muscle gain and fat loss. They discuss recent research, practical insights, and debunk common myths to help athletes optimize their training and nutrition. Iron Culture is proudly presented by the MASS Research Review. Mostly because Helms and Trex ar...

A methods-focused episode about how muscle and body-composition measurements can mislead you when reading the research. The main event is a new Balshaw and colleagues paper concluding that ultrasound muscle thickness is a poor index of MRI-measured muscle growth. Trexler and Helms argue this shouldn't be read as "throw out all ultrasound research" — the real culprit is that muscle thickness is a c...

In today's Q&A episode, the Erics work through a few listener questions. First they tackle upper/lower body imbalance — why lagging body parts usually call for improving training quality before adding volume, and why standout muscle groups can be maintained on surprisingly little work. Next is a long discussion on managing fatigue and exercise sequencing in high-frequency, non-traditional splits,...

The Erics sit down with bone health expert Dr. Lora Giangregorio, a professor of kinesiology at the University of Waterloo, to unpack what's actually known about how bone adapts to resistance training. The conversation covers why bone changes so slowly, the many sources of measurement error in DEXA scans, and why so much of the exercise-and-bone literature is underpowered and hard to interpret. Dr...

In this episode, Steve Hall and Eric Helms explore the nuances of training, recovery, and the use of technology in bodybuilding. They share insights on managing recovery, the limitations of fitness trackers, and the importance of personalized approaches to training and nutrition. If you're in the market for some new (ultra-high-quality) gym gear or apparel, be sure to use code "MRR10" for a 10% di...

Trexler and Helms open with an overview of the new MASS issue (body recomposition, a protein consensus paper, reverse dieting) and a powerlifting World Championships recap before diving into a rapid-fire listener Q&A. Along the way they tackle whether protein needs scale with training volume, the science behind a supplement that's been called "Nature's Ozempic," evaluating protein quality based on...

In this Q&A episode, Eric Trexler and Eric Helms open with a recap of their trip to Norway and announce a new MASS partnership with AFPT International. They then work through a string of listener questions that end up forming a surprisingly cohesive arc: how much total daily energy expenditure actually varies between people, RED-S and low energy availability, what really drives satiety, and a deep...

In a monumental moment for the Iron Cult, OMAR RETURNS for a guest appearance. In this episode, Omar Isuf and Eric Helms discuss the journey of creating the ambitious Iron Culture documentary, highlighting behind-the-scenes challenges, personal sacrifices, and the passion driving their project. They reflect on the collaborative effort, funding, and the cultural significance of their work, offering...

Eric Helms and Steve Hall discuss training strategies, deloads, body image, and the cultural aspects of bodybuilding, sharing insights from their experiences and recent projects like the bodybuilding documentary. Chapters 00:00 Introduction and Banter 03:00 Connecting with Omar and Rascal 05:58 The Essence of Bodybuilding and Community 08:49 The Documentary Journey 12:06 Philosophical Reflections...

Eric Trexler and Eric Helms recently found themselves in the middle of a debate about optimal protein intakes, all initiated by a social media post from Stu Phillips (a leading researcher in the area). In this episode, they dive into how that scientific discourse played out, the nuances of protein intake, and the implications for recreational lifters and bodybuilders alike. They discuss the comple...

Back in episode 375, Helms and Trex briefly mentioned a few "evidence-based fitness" topics for which their views have evolved over the years. In hindsight, they didn't give a few of those topics the time, attention, and explanation they deserve. So in this episode, Helms and Trex take a closer look at two key topics: maximum recoverable (or adaptable) training volume, and various approaches to st...

Join us for a rare Iron Culture episode with co-hosts who are not only on the same continent, but actually in the same ROOM. Helms and Trexler are in Australia for the Sports Nutrition Association Annual Conference, so they got together to record an episode about Trex's presentation topic: resistance to weight loss. Specifically, why being a true "outlier" who is resistant to weight loss efforts i...

Join Drs Eric Helms and Eric Trexler as they discuss the importance of humility in science, and a few key areas where their perspectives have changed over the years. If you're in the market for some new (ultra-high-quality) gym gear or apparel, be sure to use code "MRR10" for a 10% discount over at elitefts.com Iron Culture is proudly presented by the MASS Research Review. Mostly because Helms and...

Join Steve Hall and Eric Helms as they explore the nuances of bodybuilding, nutrition, and training strategies.  From caffeine timing and body composition tracking to posing techniques and mental models, this conversation offers practical insights for athletes and enthusiasts aiming to optimize their performance and physique. Iron Culture is presented by the MASS Research Review massresearchreview...