J3 University

Retatrutide is getting a ton of attention in bodybuilding, but most people still do not understand where it actually fits. In this episode, we break down how it works, where it may help during contest prep or post-show, and where it can absolutely hurt performance, peak week accuracy, recovery, and muscle retention.

We also cover real-world dosing considerations, side effects, and why this is a tool for specific cases, not a shortcut every physique athlete should jump on.

If you want more episodes like this — where we translate research into practical coaching decisions — subscribe and follow along each week.

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How often should you actually change your workout split — and is switching too soon killing your progress? In this episode, we break down the real science behind exercise rotation vs. repeatability, including what a 2021 study revealed about regional muscle growth and whether variety actually builds more muscle.

We cover how your experience level should dictate how often you rotate, which muscle groups genuinely need exercise variety and which don’t, and how to structure your upper/lower split so you’re covering full muscle actions without stacking injury risk over time.

If you want more episodes like this — where we translate research into practical coaching decisions — subscribe and follow along each week.

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If your lifts stop progressing, the worst mistake you can make is assuming you’re actually stalled.

In this episode, I walk through how I diagnose stalled training performance in physique athletes and why most plateaus are misidentified. I explain how recovery, fatigue, rep quality, split design, and exercise sequencing affect progression long before you need to change your program.

By the end, you’ll know exactly how to troubleshoot stalled lifts without sabotaging hypertrophy. If you want more episodes like this — where we translate research into practical coaching decisions — subscribe and follow along each week.

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Most lifters aren’t limited by science — they’re limited by how hard they actually train.

In this episode, we break down what truly drives hypertrophy from a real coaching perspective — beyond theory and into practical application. I sit down with Steve Hall to discuss evidence-based training, proximity to failure, deloads, volume management, and how advanced athletes actually keep progressing long term.

If you’re serious about bodybuilding, coaching, or maximizing muscle growth, this conversation will challenge how you think about training.

If you want more episodes like this — where we translate research into practical coaching decisions — subscribe and follow along each week.

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The fastest way to stall your physique isn’t diet—it’s getting injured and losing training time.

In this episode, we break down the most common bodybuilding injury patterns (elbows, knees, low back, rotator cuff) and how to prevent them with better movement matching, exercise selection, and load management. We also explain how to spot the warning signs early, adjust ROM and resistance profiles, and when it’s time to stop “pushing” and shift into a true recovery phase so you can keep progressing long-term.

If you want more episodes like this — where we translate research into practical coaching decisions — subscribe and follow along each week.

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Most lifters “maintain” after a bulk—and accidentally lose more progress than they realize.

In this episode, we break down what actually determines whether you keep muscle after a growth phase: training stimulus + recovery, not a magic maintenance block. We walk you through the assessment we use before the push ends, when to go straight into a fat loss phase, and when a brief hold is smarter.

If you want to stay time-efficient and keep stacking productive phases year after year, this is the framework. If you want more episodes like this — where we translate research into practical coaching decisions — subscribe and follow along each week.

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If your week-to-week visuals suddenly tank, you’re not “still growing”—you’re stacking dieting debt.

In this episode, we break down the earliest signs your growth phase has stopped being productive—especially the visual shift that tells you fat gain is outpacing muscle. We also cover how prep timelines get ruined, which health/sleep markers matter most, and why “holding” (maintenance) is often the smarter move before the next push.

If you want an offseason you can actually cash in on, this is the decision process. If you want more episodes like this — where we translate research into practical coaching decisions — subscribe and follow along each week.

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2025 was supposed to be the most science-driven era of hypertrophy training — but instead, much of the “science-based” conversation turned into rigid dogma. In this episode, John Jewett and Luke unpack what actually happened, why black-and-white rules took over the internet, and what lifters and coaches should carry forward into 2026 if the goal is maximal muscle growth.

They break down the biggest misapplications that dominated training discourse this year: the “4–8 reps only” narrative, confusion around training to failure, the misunderstood idea of “growing at maintenance,” and how lengthened partials became a one-size-fits-all prescription. The core message is clear — research is valuable, but only when applied with context. Exercise selection, fatigue management, skill level, risk tolerance, and long-term programming realities all matter if evidence is going to translate into real progress.

This episode is a practical reminder that being truly science-minded doesn’t mean chasing rules — it means learning how to apply data intelligently in the real world.

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If you could only pick one exercise per muscle group to maximize hypertrophy, what would you choose—and which “go-to” movements are actually overrated? In this episode of the J3 University Podcast, John Jewett and co-host Luke Miller continue the series (following last week’s upper-body breakdown) by covering lower body and arm training through a practical lens: biomechanics, repeatability, and long-term sustainability.

They move from spinal erectors through glutes, quads, hamstrings, calves, biceps, and triceps—explaining why certain patterns are easier to progress, which setups hold up best over time, and where popular choices (like rack pulls, walking lunges, seated calf raises, and more) often fall short depending on the individual. The core message stays consistent: there’s no universal “best” exercise—only the best option for your structure, goal, and ability to execute it consistently.

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What’s the single best exercise for building muscle in each upper-body muscle group—and which popular movements are actually overrated? In this episode of the J3 University Podcast, John Jewett and co-host Luke Miller break down their top upper-body exercise picks using a clear, systems-based framework focused on stimulus quality, repeatability, and long-term sustainability.

They walk through what truly defines a “great” exercise, then apply that lens to chest, delts, upper back, and lats—highlighting where machines outperform free weights, why certain classics fall short for hypertrophy, and how individual structure and longevity should guide exercise selection. This is a practical, coach-to-coach discussion designed to help athletes and coaches make smarter programming decisions that hold up over time.

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