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Episode
Not Growing? You Aren’t Training Enough
~30 min
Episode Brief·YouTube

Not Growing? You Aren’t Training Enough

Mike Israetel
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TL;DR

The four things you'd lose by not watching

4 items

TL;DR

The four things you'd lose by not watching

4 items
1

Most people grow more muscle with higher training volumes (30–52 sets per muscle per week) than with low volumes (5–20 sets), provided they can recover between sessions.

2

The popular '5–10 reps, 5–10 sets, twice a week' approach (the 'club of sevens') works for beginners and strength-size combos but fails for stubborn muscles that need more disruption.

3

Three practical ways to increase volume without endless sets: add a third training day per muscle, use myo-rep sets to accumulate volume in less time, and perform agonist supersets (e.g., cable pushdowns immediately into dips).

4

The RP Hypertrophy app automatically adjusts volume on lagging muscles; Mike Israetel uses it every workout.

Protocols

Concrete recipes — what, when, how much, and why

4 items

Add a third training day for lagging muscles

WhatInstead of doing more sets per session, add an extra training session per week for the target muscle, keeping per-session volume the same.
WhenWhen current volume (e.g., 10 sets/week from 2 sessions) isn't driving growth, and you want to avoid 'junk volume' in a single workout.
DoseExample: from 2x/week curls (5 sets each, 10 total) to 3x/week curls (5 sets each, 15 total).
For whomTrainees whose lagging muscles recover quickly and who can fit an extra short session into their schedule.
WhyIncreases total weekly volume by 50% without making individual sessions feel excessively long or fatiguing; still allows hard, heavy training.
CaveatsEnsure systemic fatigue doesn't become excessive; monitor recovery and strength progression.

Israetel argues that simply adding sets to an existing workout can feel like 'junk volume' and be mentally draining. By spreading the same per-session volume across more days, you accumulate more total work without the dread of a marathon session. He emphasizes that this is a 'big deal' and can cause notable gains if low volumes weren't working. He suggests doing this only for a few muscles that recover fast, to keep systemic fatigue in check.

Mechanism

More frequent stimulation provides additional muscle protein synthesis spikes and keeps the muscle in a net anabolic state for a greater proportion of the week, while the per-session volume remains manageable for recovery.

Instead of doing curls twice a week, do curls three times a week. Now you've gone from doing 10 sets of curls total per week to 15 sets of curls total per week by just adding a session for biceps. Big deal.

Also said
“Doesn't seem as hard. You're recovering just fine. You can still go hard and heavy, but you're literally multiplying the volume by an additional third.”— Highlights the psychological ease.

Myo-rep sets for efficient high volume

WhatPerform an initial set of 15–20 reps close to failure, then follow with multiple mini-sets with 5–10 seconds rest, each time accumulating reps to match the initial set's total, stopping when you can't reach that total without excessive rest.
WhenWhen you need high volume for a muscle but want to save time; can be used on isolation exercises like hamstring curls, lateral raises, bicep curls.
DoseExample: first set 18 reps; rest 5–10 sec, do mini-sets of 4, 2, etc. until you reach 18 total reps for that 'set'; repeat for 3–4 total myo-rep clusters.
For whomIntermediate to advanced trainees with time constraints who need high volume for stubborn muscles.
WhyAllows many approaches to failure in a short time, accumulating effective volume equivalent to 7–8 normal sets in the time of 4 sets.
CaveatsVery demanding; requires high pain tolerance; may not be suitable for heavy compound lifts due to technique breakdown.

Israetel explains that one of the worst things about high-volume training is the time it takes. Myo-reps solve this by condensing the work. He describes the protocol in detail: after the first set to near failure, you rest only 5–10 seconds, then do a few reps to reach the same total, repeating until you can't. He notes that even though it's not a ton of sets, the volume is 'nuts' because you're getting close to failure numerous times. He admits 'it sucks, but you don't waste a lot of time doing it.'

Mechanism

By keeping rest intervals extremely short, you maintain high levels of metabolic stress and muscle fiber recruitment, and each mini-set takes the muscle close to failure again, maximizing motor unit recruitment and mechanical tension across many 'effective reps' without full recovery.

Do a set of 15 to 20 reps. Very close to failure. In a muscle that you need to bring up. And then add a few sets after that. But make them myo-rep sets. Where you stop the total work that you're doing when you hit that top end number from your first set.

Also said
“Even though it's not a ton of sets because you're having so many approaches to failure within a single set, you don't have to do eight sets. Four sets might be the equivalent volume of like seven or eight sets.”— Quantifies the efficiency.
“It sucks, but you don't waste a lot of time doing it.”— Honest about the discomfort.

Agonist supersets (isolation into compound)

WhatPerform an isolation exercise for a muscle (e.g., cable tricep pushdowns) to near failure, then immediately (5–10 sec rest) move to a compound movement where that muscle is the limiting factor (e.g., dips or close-grip push-ups), and take that set close to failure.
WhenWhen you want to blast a muscle with high volume in minimal time; ideal for triceps, but can be adapted for other muscles (e.g., leg extensions into squats for quads).
DoseOne superset = 1 set isolation + 1 set compound; rest 1–2 min between supersets; repeat for 3–4 rounds.
For whomTrainees with stubborn triceps (or other muscles) who want to increase volume without spending extra time.
WhyDoubles the effective sets per unit time, providing massive stimulus while the muscle is pre-fatigued, ensuring high motor unit recruitment in the compound movement.
CaveatsRequires access to equipment for quick transitions; may compromise performance on the compound movement if fatigue is too high; not for beginners due to technique demands.

Israetel suggests this as a fun alternative to doing many straight sets of an isolation exercise. He gives the example of tricep pushdowns immediately followed by dips or deficit push-ups. He says the amount of volume and stimulus is 'massive' and because rest is short, it doesn't take much time. He even suggests a variation: pushdowns then flat or incline dumbbell press, where triceps are the limiting factor, saying 'it will cook that ass.' He recommends trying these techniques only on muscles that recover fast but aren't growing.

Mechanism

Pre-fatiguing the target muscle with isolation ensures it becomes the limiting factor in the subsequent compound exercise, so even with lighter loads, the muscle experiences near-maximal tension and metabolic stress. The short rest keeps fatigue high, increasing total 'effective reps' and time under tension.

You try tricep pushdowns. How many sets of tricep pushdowns with a cable are you really interested in doing? I'm not interested in doing that many. What you can do is a set of triceps push downs. Walk right over to either a deficit push-up situation, or if you're real pimp and really strong, a dip situation. And with 5 to 10 seconds rest, ideally little, you go right from cable push downs to either push-ups or dips. And you do another set of 5 to 10 real close to failure. That's a superset.

Also said
“The amount of volume and stimulus that's pouring into your triceps is massive. And because you don't rest long, it doesn't take a ton of time.”— Emphasizes efficiency.
“Push downs, lay down on a bench, flat or incline dumbbell press, your triceps is limiting factor, it will cook that ass.”— Memorable, vivid description.

Higher volume for stubborn muscles

WhatFor muscles that aren't growing on low volume (e.g., 10–20 sets/week), progressively increase weekly sets to 30+ while monitoring recovery and strength gains.
WhenWhen a muscle meets the checklist: doesn't get pumped/sore easily, recovers within a day, maintains performance across many sets, and has been stagnant on lower volumes.
DoseStart by adding 2–4 sets per week, assess for 2–3 weeks; if still recovering, add more. Can go up to 30–40 sets/week for that muscle, while keeping other muscles at lower volumes to manage systemic fatigue.
For whomIntermediate to advanced trainees with specific weak points.
WhyEmpirical evidence shows that higher volumes cause more hypertrophy in most people, especially for muscles that are resistant to growth.
CaveatsSystemic fatigue must be managed; don't apply high volume to all muscles simultaneously; watch for signs of overreaching (strength plateau or decline, joint pain, poor sleep).

Israetel frames this as the core message: when low volume doesn't work, more volume almost certainly will. He advises using the three techniques (frequency, myo-reps, supersets) to implement higher volume without excessive time or monotony. He stresses that this is not a guess but what the literature says, and that he has no dog in the fight—he loves heavy low-volume training but acknowledges the reality.

Mechanism

Greater volume provides a larger cumulative mechanical tension stimulus and more muscle protein synthesis events, driving adaptation in muscles that have a higher threshold for disruption.

Personal experience

Israetel says he trained with heavy, low-volume methods for a decade and loved it, but now uses higher volumes for lagging muscles, though he finds them boring and tiring.

When a certain amount of volume doesn't get you more jacked, more times than not higher volume almost certainly will.

Also said
“So, you might need to do some higher volumes, especially to bring up lagging muscle groups because that's the answer for growth more times than it's not.”— Direct advice.
“I have no dog in this fight. I'm just reporting the situation on the ground. I love heavy low volume training. I did it for like a decade before anybody knew me.”— Establishes credibility and lack of bias.

What's new

Personal practice updates, fresh positions, predictions

3 items

high-volume-superiority-evidence

Mike Israetel, who coined the term 'maximum recoverable volume' and once believed that >20 sets per muscle per week was counterproductive, now acknowledges that a decade of studies shows 30, 40, and even 52 sets per muscle per week cause more hypertrophy than 5–20 sets in research settings.

Why this matters: This is a major reversal from the early evidence-based consensus and directly challenges the minimalist training dogma.

Background

In the 2010s, Israetel and others argued that beyond ~20 sets per muscle per week, recovery constraints would blunt hypertrophy. He named MRV to describe that ceiling. The community considered 18 sets/week 'high volume'.

Israetel explains that multiple university studies since then, including a landmark study peaking at 52 sets, have consistently shown that higher volumes produce more growth. He emphasizes that this does not mean everyone must do 52 sets for all muscles, because individual differences, systemic fatigue, and time constraints limit real-world application. However, for stubborn muscles that recover quickly, pushing volume far beyond 20 sets is often the answer. He notes that the low-volume crowd memed the 52-set study hoping it was a joke, but the data are clear: as long as you can recover (strength goes up session to session), more volume generally means more growth.

Personal experience

Israetel says he was 'the biggest proponent' of the MRV ceiling and used to train with about 18 sets per week, being called a 'volume spammer'. Now he acknowledges that high volumes, while boring and tiring, produce better results for lagging muscles.

Multiple studies since then dozens of studies since then have shown that compared with doing 5, 10, or even 20 sets per muscle per week in the research environment 30, 40, and in one landmark study at its peak even 52 sets of working sets per muscle per week caused better gains than 5, 10, and even 20 sets.

Also said
“I was literally the person who invented the idea, not the actual construct underneath, but named the term maximum recoverable volume, because I thought that past a certain point, we were going to see degradation of hypertrophy stimulus with just too much volume.”— Shows his personal stake in the old view.
“Back about 10 or 15 years ago... I was one of the biggest adherents in the whole evidence-based space of the idea that at some high number of sets per week, recovery constraints were going to make gains north of those volumes plateau and then regress.”— Contextualizes the shift.
“The high-volume group, 30, 40, 50 sets, or the low-volume group, 5, 10, 20 sets? Most of the time, almost all of the time, it's going to be the higher-volume group of 30, 40, or 50 sets.”— Summarizes the evidence.

club-of-sevens-low-volume-dogma

Israetel humorously frames the popular advice of 5–10 reps, 5–10 sets, twice a week as a 'global conspiracy' called the 'club of sevens', arguing it is an incomplete approach that fails for stubborn muscles.

Why this matters: It's a memorable, provocative critique of minimalist training culture, blending humor with a serious point about why people cling to low volume.

Background

The '5–10 reps, 5–10 sets, twice a week' prescription has become widespread online, often presented as the optimal and only way to train for muscle growth.

Israetel acknowledges that this approach has wisdom: it's great for beginners, intermediates with limited bandwidth, and those seeking a strength-size combo because it allows heavier loads and lower systemic fatigue. However, he argues it is incomplete because it doesn't work well for muscles that are stubborn, don't get pumped/sore easily, recover within a day, or maintain performance across many sets. He says the low-volume approach is tempting because it's more fun, less painful, less work, and gives bigger short-term ego boosts from strength jumps. But when muscles don't respond, higher volume is the answer, even if it's 'thankless labor'.

Guys, I regret to inform you there is a global conspiracy amongst us the best training to gain muscle is 5 to 10 sets of 5 to 10 reps done twice a week per muscle.

Also said
“Lower volume training is more fun, less painful, less work, and gives you bigger short-term ego boosts by strength gains, well, where the do I sign up?”— Explains the psychological appeal.
“Sometimes it's just thankless labor that gives you results.”— Counters the desire for a hack.

fast-recovering-muscles-need-high-volume

Israetel identifies a checklist: muscles that don't get very pumped or sore, continue performing near-maximally set after set, and feel recovered the next day are likely slow-twitch dominant and respond best to high volumes (far above 20 sets/week).

Why this matters: Provides a practical, observable way for trainees to self-diagnose which muscles need more volume, moving beyond generic prescriptions.

Background

Traditional advice often treats all muscles the same, but individual muscle fiber composition and recovery rates vary.

He explains that if a muscle gets pumped and sore from just a few sets, it probably doesn't need much more volume. But if you can do set after set of lateral raises with minimal performance drop, or your delts feel fresh the next day, that muscle is likely slow-twitch dominant and thrives on high volume. He says this is supported by theory and empirical evidence. The goal is to push volume until the muscle finally starts to fatigue, because that's where growth occurs. He uses delts as a prime example, noting that many people can train delts hard and feel ready to hit them again the next day, indicating they'd grow better with far more than 10–20 sets per week.

Muscles that continue to perform at high level set after set after set, probably respond better to higher volumes. You want to get them to a place where they finally start to fatigue, that's where the growth comes from.

Also said
“Some of your muscles get pumped and sore from two sets, some from eight sets. The ones that need eight sets, they really need the eight sets to give you your best growth.”— Illustrates the variability.
“Scott, what's a muscle in your body that like doesn't matter what you do to it the next day it's like let me hit it again. Delts? Yeah. That's delts for many people.”— Concrete example.
Disclosed sponsorships3speaker disclosed

RP Hypertrophy App

Product Sponsored · disclosed

An app that provides direct feedback and automatically increases volume on exercises where you need more growth, detecting this automatically.

DisclosureMike Israetel is a co-founder of Renaissance Periodization, which develops the RP Hypertrophy app.

Israetel mentions that instead of figuring out volume adjustments on your own, the app does it for you. He says he uses it every single time he trains, 'bar none.' The app is positioned as a tool to implement the high-volume principles discussed, especially for those who want automated programming.

vs alternatives

Compared to self-programming, the app removes guesswork and ensures volume is increased precisely where needed, based on performance data.

Personal experience

I use it every single time I train, bar none.

You could have a single app that gives you direct feedback and automatically increases volume on precisely the exercises on which you need more volume to grow. It detects this automatically. It is available. It is an awesome app. I use it every single time I train, bar none.

Find RP

RP Diet Coach App

Product Sponsored · disclosed

An app that tells you what to eat and when to support muscle growth, mentioned in the context of getting jacked.

DisclosureSame affiliation as above.

Israetel briefly plugs the RP Diet Coach app as a companion to training, saying it can help you get jacked so you can 'finally be able to look your father in the eyes' (a callback to a joke with Scott). It's a light mention.

If you need to be a bigger king, well, the RP Diet Coach app can hook you up by telling you what to eat and when so you can get jacked and finally be able to look your father in the eyes.

Find RP

RP Membership (YouTube channel membership)

Service Sponsored · disclosed

For $5 a month, you get access to 368+ exclusive member videos, described as a 'mega value'.

DisclosureMike Israetel promotes his own channel's membership.

Our member section just got more amazing for $5 a month. You get 368 and counting member videos that are only exclusive to membership. It is a mega value, and if you hit that join button below, your life will get measurably better.

Find RP

Notable quotes

Lines worth pulling out — contrarian, specific, or perfectly phrased

6 items
Guys, I regret to inform you there is a global conspiracy amongst us the best training to gain muscle is 5 to 10 sets of 5 to 10 reps done twice a week per muscle.
Sets up the entire 'club of sevens' critique with humor and hyperbole.
I was literally the person who invented the idea, not the actual construct underneath, but named the term maximum recoverable volume, because I thought that past a certain point, we were going to see degradation of hypertrophy stimulus with just too much volume.
Reveals his personal history and authority on the topic, making his current stance more impactful.
Multiple studies since then dozens of studies since then have shown that compared with doing 5, 10, or even 20 sets per muscle per week in the research environment 30, 40, and in one landmark study at its peak even 52 sets of working sets per muscle per week caused better gains than 5, 10, and even 20 sets.
The core evidence statement, shocking to low-volume advocates.
Lower volume training is more fun, less painful, less work, and gives you bigger short-term ego boosts by strength gains, well, where the do I sign up?
Captures the psychological trap of minimalism.
Sometimes it's just thankless labor that gives you results.
A blunt, memorable counter to the desire for easy hacks.
Muscles that continue to perform at high level set after set after set, probably respond better to higher volumes. You want to get them to a place where they finally start to fatigue, that's where the growth comes from.
A practical diagnostic rule.

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Topics covered

minimum-effective-volumemaximum-recoverable-volumehigh-volume-traininglow-volume-trainingclub-of-sevenssystemic-fatigueindividual-differencesmyo-repsagonist-supersetstraining-frequencystubborn-musclesmuscle-fiber-typeego-and-trainingrp-hypertrophy-apprp-diet-coach-app
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