How Hard Should You Train? Sean Nalewanyj’s Take on Reps in Reserve
UPLIFT IRON CLUBSean Nalewanyj's Real Message: Train Hard Without Worshipping Failure
How hard should a productive set feel? It is an unusually simple question that creates surprisingly complicated gym arguments. Some lifters treat every repetition as a test of character, while others follow a spreadsheet so cautiously that their working sets resemble warm-ups. Sean Nalewanyj's useful contribution is to reject both extremes. He argues that effort deserves the same attention as sets, repetitions and training frequency, but that you do not need an elaborate mathematical ritual to judge whether a set was genuinely challenging. Reps in reserve, or RIR, gives ordinary lifters a practical vocabulary for that judgment.
In his explanation of the resistance-training effort scale, Nalewanyj favors asking how many technically sound repetitions remained when a set ended. If you finish a curl and know you could have completed two more repetitions with the same form, you finished at roughly two RIR. If another clean repetition was impossible, that is zero RIR. The distinction matters because a set of ten can be easy, demanding or maximal depending on the weight, the lifter and the day. A rep count without any indication of effort tells only part of the story.
The coach's usual practical target is about one or two good repetitions left on many working sets, rather than reaching complete muscular failure on every attempt. This is a guideline, not a claim that every muscle, person or exercise has one universally perfect effort setting. A beginner learning to squat might benefit from a wider buffer while technique becomes consistent. A practiced lifter doing a supported cable curl can safely approach the end of the available repetitions more closely. The productive zone changes with the movement and the cost of getting it wrong.
This also explains why advice to simply train harder can fail. Two people hearing those words may interpret them in opposite ways. One leaves the gym after several comfortable sets because the weights felt heavy in their hands. The other turns every squat into an ugly maximum, loses technique and struggles to recover for the next session. A shared reference such as RIR makes the coaching instruction more specific: work hard enough to stimulate adaptation, but stop before fatigue erases the quality of the work you still need to perform.
An important nuance is that RIR is an estimate, not a laboratory measurement. A lifter cannot literally inspect the unused repetitions in a muscle. Breathing, motivation, grip, pain, confidence and familiarity with an exercise all affect the guess. That does not make the tool useless. It means the number should guide decisions rather than become a source of false precision. An estimate of one or two remaining repetitions is often more useful than insisting that every set must be exactly RPE 8.5.
Think about the difference between hard effort and reckless effort. A challenging last repetition may slow substantially while the path of the weight remains controlled. Reckless effort begins when a lifter changes the exercise to keep moving the load: a curl becomes a whole-body swing, a row becomes a violent hip extension, or a squat loses its stable position. A program can be intense without rewarding those substitutions. The relevant question is not whether the set looked dramatic, but whether the target muscles performed meaningful work.
Nalewanyj's larger lesson is consistency across weeks. A hard set that can be repeated, recorded and gradually improved is usually more useful than a one-off performance that compromises the rest of the workout. You can leave the gym knowing that you trained seriously without needing to collapse onto the floor. RIR provides the missing middle ground between coasting and treating every workout as an emergency. The rest of the article turns that idea into an actionable training system.
What Zero, One, Two and Three Reps in Reserve Actually Mean
Reps in reserve is easiest to understand when you imagine a fixed weight and an honest endpoint. Suppose you can complete twelve strict repetitions of a dumbbell press before another repetition would fail. If you stop after nine, you have approximately three reps in reserve. Stop after ten and you have two. Stop after eleven and you have one. Complete the twelfth and you are at zero, assuming a thirteenth repetition truly was not possible with the same technique. The arithmetic is straightforward; learning to estimate the endpoint is the skill.
Three RIR usually feels like a challenging but controlled working set. You are no longer warming up, yet you could clearly produce several more repetitions if required. For a beginner, for a technically demanding squat, or during a lighter week, this may be a sensible target. Three RIR does not automatically mean ineffective training. It can provide substantial stimulus, particularly when a movement is new or the lifter is not yet accustomed to hard resistance work. It also leaves room to accumulate quality sets.
Two RIR is a useful default for many hypertrophy exercises. The final repetition should demand attention, but you would confidently bet on completing two more with your normal range of motion. A set of eight at two RIR is not the same as an eight-repetition maximum. It is roughly the workload you could complete for ten repetitions under comparable conditions. That distinction helps prevent people from accidentally turning a carefully programmed session into a collection of maximum tests.
One RIR is genuinely hard. The last repetition may slow, your focus must remain high and you are confident that only one additional clean repetition remains. This can be productive on stable machines, supported rows and many isolation movements. It is also demanding enough that technique and setup matter. If you are forced to shorten the range of motion or change the exercise to keep moving, you may have already crossed the intended endpoint. Count remaining good repetitions, not whatever could be forced through with momentum.
Zero RIR means reaching the point where another complete repetition with the agreed technique is not available. It does not require a dangerous failed attempt under a barbell. On a leg extension, for example, the lifter may simply be unable to complete the next full extension. On a free-weight squat, a spotter or properly positioned safety pins are essential if a lifter intends to explore a true limit. Most ordinary workouts do not need repeated zero-RIR squat sets to be effective.
The commonly used lifting RPE scale is a different way to express the same upper-end effort. RPE 10 corresponds approximately to zero RIR, RPE 9 to one, RPE 8 to two and RPE 7 to three. This is a practical translation, not a promise that subjective exertion behaves identically in every movement. A set of twenty lunges can feel miserable from breathing and balance while still leaving several repetitions in the legs. A set of five heavy presses can feel calm until the last two repetitions become suddenly difficult.
Do not confuse reps in reserve with repetitions you could perform after changing the rules. If you planned full-depth squats, quarter squats do not count as remaining repetitions. If your row used a supported chest and controlled tempo, violent body English is not an extra clean rep. Establish the standard before the set, then estimate the number left under that standard. This is what makes RIR comparable from one workout to the next and keeps the measure tied to actual training quality.
What the Research Says About Failure, Growth and Strength
Research on proximity to failure is more nuanced than either side of the internet argument suggests. Muscles respond to challenging resistance and sufficient repeated exposure, not to a magical sensation that appears only on the final possible repetition. Studies comparing sets taken to failure with sets stopped earlier often find that both approaches can build muscle when other important variables are reasonably controlled. That is good news for people who want substantial results without exhausting themselves on every exercise.
However, not all non-failure training is equivalent. Ending a set with one or two repetitions left is very different from stopping with eight or ten still available. The latter may provide a much smaller stimulus per set, especially for an experienced lifter using a light load. When studies group many different distances from failure into broad categories, the average result can conceal that difference. A useful interpretation is that getting reasonably close matters, while the additional benefit of squeezing out every final repetition may be small or inconsistent.
Failure can also change what happens later in a workout. Imagine two lifters doing three sets of dumbbell presses. One reaches complete failure on the first set, then loses several repetitions despite adequate rest. The other stops with one or two in reserve, preserves technique and completes a larger number of productive repetitions across the session. The second approach can deliver comparable muscle-building work with less acute fatigue. The comparison is not universal, but it illustrates why evaluating only the hardest single set misses the rest of the training dose.
Strength outcomes add another layer. A heavy squat or bench press depends on skill, coordination and the ability to produce force with a stable technique. Frequent failure may not be necessary to practice those qualities and can sometimes interfere with the quality of later repetitions. Moderate buffers are common in strength programming because a lifter can rehearse challenging weights without turning every session into a competition. Hypertrophy work allows more flexibility because many rep ranges and exercises can challenge the same muscle effectively.
Different exercises also have different costs. A set of cable curls at zero RIR usually imposes less whole-body disruption than a set of heavy deadlifts taken to the same subjective endpoint. This does not mean isolation work is free of risk; elbows, tendons and local fatigue still matter. It means the balance between stimulus and fatigue should be judged in context. The most useful research question is not whether failure is good or bad, but when the extra repetition is worth the extra cost.
Another limitation is that studies are conducted over finite periods with specific participants, exercises and methods of estimating RIR. An eight-week experiment in trained young adults does not automatically settle what is best for an older beginner, a person recovering from an injury or a competitive powerlifter. Self-reported RIR also contains measurement error. These limitations argue against absolute rules, not against evidence. They encourage choosing a sensible starting range and evaluating performance, soreness, adherence and progress over time.
For practical hypertrophy, one to three RIR on most working sets is a defensible starting point, with occasional closer-to-failure efforts on stable movements if recovery allows. More advanced lifters may experiment with zero RIR on selected isolation sets, while beginners can grow without pursuing that endpoint. The objective is to create enough tension and repeated challenge for adaptation. Being able to return two days later and train well is part of the result, not an afterthought.
Compounds Versus Isolation: Where to Spend Your Hardest Reps
An intelligent RIR target starts with the exercise rather than a blanket rule for the entire gym. Compound lifts ask several joints and muscle groups to cooperate. Isolation exercises make it easier to concentrate work on a smaller region. Both can build muscle, but the consequences of the last possible repetition are not identical. This is why one set of numbers cannot capture every movement. The challenge is to push the intended muscles while protecting the quality of the whole training session.
Consider the barbell squat. As the load becomes difficult, the quadriceps and glutes are not the only systems under stress. Your trunk must remain braced, balance must be maintained and the bar path must stay controlled. Near the limit, the back may begin to fold or the hips may shoot up faster than the chest. Even if the legs could theoretically produce another repetition, the agreed technique may no longer be available. For many lifters, leaving roughly two or three repetitions in reserve on hard squat sets is a productive compromise.
The deadlift has a similar whole-body cost, often with an even clearer reason to avoid frequent grinders. A heavy pull taxes the grip, back extensors and overall coordination. If the final repetition is so slow that the setup disintegrates, the extra work may provide little benefit relative to the fatigue it creates. One or two demanding top sets followed by controlled back-off work can be more sustainable than repeatedly chasing a maximal final pull. This is not a ban on hard deadlifts; it is a reason to plan them deliberately.
Bench presses, rows and overhead presses sit somewhere in the middle. A stable machine chest press may allow a closer approach to failure than a free barbell bench performed without safeties. A chest-supported row is easier to keep strict than a bent-over row when the lower back is tired. A machine shoulder press reduces some balance demands, but shoulder comfort still sets the limit. Choose the variation that lets the intended muscles work hard while maintaining a consistent range of motion and joint position.
Isolation work offers useful opportunities to explore the harder end of the scale. A leg extension, cable lateral raise or triceps pressdown can often be taken to one RIR, and occasionally zero, without the same coordination demands as a squat. The movement still requires control. Swinging a dumbbell, bouncing at the bottom of a leg extension or wrenching the elbow through a painful range is not an advanced intensity technique. A clean final repetition is the goal; losing the exercise is not.
Practical examples help. You might perform a squat for three sets of six to eight at two RIR, a leg press for two sets of ten to twelve at one or two RIR, then leg extensions for two sets of twelve to fifteen at one RIR. On upper-body day, a bench press might remain at two RIR while a cable fly ends closer to one. These are starting prescriptions, not compulsory numbers. The correct load is the one that produces the planned effort while preserving the movement standard.
Safety equipment and exercise familiarity change the calculation. A squat inside a rack with correctly positioned safety bars is not the same risk as a squat performed alone without them. A lifter who has practiced the movement for years may judge effort more accurately than someone learning it this week. When pain, dizziness or unstable technique appears, stop regardless of the target RIR. The purpose of effort tracking is to make training more effective and repeatable, not to override obvious safety signals.
How to Calibrate Your RIR Without Guessing or Cheating
The most common problem with RIR is not arithmetic; it is calibration. Many lifters can describe two reps in reserve perfectly but cannot yet identify that feeling during a demanding set. Beginners often underestimate how many repetitions remain because discomfort arrives before true muscular failure. A high-repetition leg exercise may make the lungs burn while the legs could still complete several clean repetitions. Conversely, a heavy compound lift can move smoothly until a sudden technical limit appears. You learn to distinguish these experiences by comparing estimates with controlled outcomes.
Start with a stable exercise that is easy to stop safely, such as a seated cable row, leg extension or machine chest press. Warm up, select a load you expect to lift for ten to fifteen good repetitions, and perform a normal working set. Stop when you believe you have two repetitions remaining. Record the weight, completed reps and your estimate immediately. After adequate rest, you may perform a separate calibration set with the same movement and similar load, continuing until the next complete repetition would not be possible with the established technique.
Suppose you stop the first set after twelve repetitions and estimate two RIR, but the later calibration set suggests you could have performed seventeen clean repetitions at the same load. That gap does not prove your earlier judgment was exactly five repetitions wrong: fatigue, rest and order effects make the sets imperfectly comparable. It does tell you that your internal sense of proximity may be too conservative. Use the result as feedback, not as a score to be ashamed of. Repeat occasional checks over several weeks rather than treating one trial as the final truth.
Set an objective movement standard before starting. For a leg extension, adjust the seat, use the same controlled range, keep the hips stable and avoid kicking the weight with momentum. For a chest-supported row, keep the torso in contact with the pad and bring the handle to a repeatable endpoint. If a final repetition shortens dramatically or requires an unrelated body movement, it does not count as a successful full rep. Technical consistency makes the RIR estimate meaningful because the target does not move as fatigue rises.
Pay attention to rep speed, but do not turn it into a universal calculator. When load and technique are stable, repetitions often slow as fatigue accumulates. That can provide a useful clue that the endpoint is approaching. Yet different exercises have different speed patterns, and some lifters intentionally move slowly even when far from failure. A deliberate three-second lowering phase is not evidence that only one rep remains. Combine speed with the perceived difficulty of the last repetition and your memory of similar sets.
Your first working set is also information. If the prescribed eight to twelve repetitions at two RIR feel like six RIR, the load may be too light. Increase it modestly on the next set rather than finishing the whole session with ineffective effort. If the first set unexpectedly reaches technical failure at seven repetitions, reduce the load and keep the planned buffer. A small adjustment is better than protecting the original number on the dumbbell at all costs. The load serves the training goal, not the other way around.
Calibration should never require dangerous testing. Do not deliberately fail a free-weight squat, bench press or overhead press without suitable safeties and competent supervision. People with injuries, cardiovascular concerns or limited training experience should be especially conservative. An occasional safe machine-based reference is enough for most recreational lifters. Over time, your estimates become more consistent because you accumulate real comparisons between how a set felt and what you could actually perform.
The simplest logging method is one line per important set: exercise, load, repetitions and estimated RIR. Add a short note only when it changes the interpretation, such as shortened range, poor sleep or an unfamiliar machine. You are looking for useful trends, not perfect decimals. If you perform more repetitions with the same weight and similar RIR over several weeks, that is a stronger sign of progress than a single heroic failure set.
Fatigue Is the Hidden Cost: Sets, Rest, Recovery and Weekly Volume
Two lifters can finish the same number of sets and leave the gym with very different recovery demands. One stops most exercises with one or two clean repetitions in reserve. The other takes every set to failure, adds forced repetitions and shortens rest to keep the session feeling intense. Both may experience a strong pump, but the second lifter can pay a much higher fatigue cost for a relatively small increase in useful stimulus. This is why effort cannot be separated from weekly volume and the ability to perform well again.
Think of fatigue in layers. Local muscular fatigue makes the target muscle less capable of producing force during the next set. Whole-body fatigue from demanding squats or deadlifts can make unrelated exercises feel harder. Joint and tendon irritation may build more slowly, especially when a lifter increases volume or intensity too aggressively. Finally, life stress and poor sleep can reduce readiness even when the previous workout looked reasonable on paper. RIR helps manage one part of this system, but it does not replace judgment about the rest.
Rest periods matter because they change what a set can accomplish. If you begin another heavy press after only thirty seconds, you may stop at a low rep count because your breathing, stabilizers or local muscles have not recovered. That is not necessarily a superior hypertrophy stimulus. For many hard compound sets, two to three minutes of rest is a practical starting point, with longer breaks when loads are heavy and performance is still suppressed. Isolation exercises often tolerate shorter intervals, although adequate recovery is still useful.
More sets are not automatically better. A lifter performing ten challenging sets for a muscle across the week may progress well, while another adding ten more poorly recovered sets gains little. The productive dose depends on experience, exercise selection, proximity to failure, sleep and nutrition. If you push every set closer to zero RIR, you may need fewer total sets to stay within your recovery capacity. If you leave a slightly larger buffer, you may be able to perform more quality work. Neither strategy should be chosen only because it looks impressive.
Watch performance rather than soreness alone. Normal post-workout soreness can follow unfamiliar exercises, but it is not a required badge of muscle growth. More concerning signs include repeated drops in repetitions at the same load, persistent joint discomfort, deteriorating technique and a reluctance to train that lasts beyond an ordinary difficult week. If those appear, first check sleep, food intake, rest intervals and recent increases in workload. A temporary reduction in sets or effort may restore productive training more quickly than doubling down.
Hard training and adequate nutrition belong together. Muscle growth requires enough energy and protein over time, while glycogen availability influences performance during repeated challenging sets. If you are dieting aggressively, recovery margins may be smaller and the same workout can feel harder. There is no reason to pretend that a person maintaining weight, a person in a calorie deficit and a person eating for muscle gain should all tolerate the same amount of failure training. Adjust the program to the conditions you actually have.
A useful weekly pattern is to begin most major exercises at roughly two RIR, allow selected stable accessories to approach one RIR, and avoid adding failure work simply because a workout feels too short. If your performance improves and recovery remains good, you can experiment with a little more volume or an occasional harder final set. If performance stalls and fatigue rises, reduce the cost before assuming you need more intensity. The most effective set is one that helps you adapt and still leaves room for the next productive session.
Finally, do not confuse mental toughness with ignoring feedback. It takes discipline to stop a set at the planned point when another ugly repetition is possible. It also takes discipline to increase the load when you have been coasting for weeks. Training maturity is the ability to do both. RIR makes those choices explicit, but the deeper skill is treating effort as a resource you allocate intelligently rather than a contest you must win every time.
A Four-Week Reps-in-Reserve Plan You Can Actually Follow
Here is an original four-week plan that turns the theory into something measurable. It is designed for a generally healthy adult who knows the basic exercises and can train three days per week. It is not presented as Sean Nalewanyj's personal routine or as a guaranteed result for every lifter. The purpose is to learn how a set at two or three RIR feels, progress loads without constantly testing failure and compare performance at a similar level of effort. Choose equipment that suits your experience and available gym.
Day A — squat, horizontal press and row. Perform a squat variation for three sets of six to ten, a bench or machine chest press for three sets of six to ten, and a chest-supported row for three sets of eight to twelve. Add two sets of leg curls for ten to fifteen and two sets of cable triceps pressdowns for ten to fifteen. Begin the major lifts at about three RIR during the first week. On the supported row and pressdown, two RIR is a reasonable target once you understand the movement.
Day B — hinge, vertical pull and shoulder work. Perform a Romanian deadlift for three sets of six to ten, a lat pulldown for three sets of eight to twelve, and a seated dumbbell or machine shoulder press for two or three sets of eight to twelve. Finish with two sets of split squats per leg and two sets of controlled lateral raises. Keep the Romanian deadlift around two or three RIR because grip and spinal positioning can become limiting. The lateral raise can finish closer to one or two RIR if it remains strict and comfortable.
Day C — leg press, upper-body balance and arms. Perform a leg press for three sets of ten to fifteen, an incline dumbbell or machine press for three sets of eight to twelve, and a cable row for three sets of eight to twelve. Add two sets of leg extensions, two sets of curls and two sets of calf raises. Aim for two RIR on the large movements and one or two on the more stable isolation exercises. Rest roughly two to three minutes on demanding compounds and sixty to one hundred twenty seconds on accessories, adjusting as needed to preserve rep quality.
Week 1 — establish your baseline. Choose weights that allow the bottom of each rep range with approximately three RIR on most compound exercises. Record load, reps and estimated RIR after the final working set of each movement. Do not chase failure to prove your estimates. If you are uncertain whether you had two or four repetitions left, write a range and focus on maintaining the same technique next time. The first week is for learning, not for exhausting every available reserve.
Week 2 — narrow the buffer. Keep the exercises and most loads unchanged. Add one repetition to a set where the previous week's effort was clearly easier than planned, or increase resistance by the smallest practical increment when all sets already reached the top of the range. Aim for approximately two RIR on most major movements. If a lift becomes unexpectedly difficult, reduce the load rather than forcing an ugly repetition. Progress is measured against the planned effort, not merely the number printed on the weight.
Week 3 — practice honest hard sets. Continue at about two RIR on squats, hinges and free-weight presses. On one or two stable isolation movements, you may finish the last set around one RIR while maintaining the full agreed range. If you are confident and the equipment is safe, one optional machine-based calibration set can help you compare your estimate with a near-limit performance. Do not add forced repetitions, drop sets or extra failure sets. The objective is precision and control, not a maximal fatigue score.
Week 4 — evaluate and consolidate. Repeat the same exercises and compare the first and fourth weeks. A meaningful improvement could be ten repetitions at a load that previously allowed eight, while both sets ended at roughly two RIR. It could also be a small weight increase with equal reps and cleaner technique. If fatigue is high, reduce working sets by about one third and use a three-RIR buffer for several sessions. This is not a failure of discipline; it is a way to preserve the progress already earned.
Use a simple decision rule after the block. If performance rose, technique stayed consistent and recovery was manageable, keep the structure and progress gradually. If every set was comfortable and the log barely changed, your estimates may be too generous or the load too light. If joints ache and performance falls, reduce volume, choose better-tolerated variations or increase rest before adding more intensity. People returning from injury or living with medical conditions should adapt the template with appropriate professional guidance.
The lasting lesson is that hard training is not measured by how wrecked you feel afterward. It is measured by challenging, repeatable work that becomes more capable over time. One or two reps in reserve will not be the perfect answer for every set, but it is an excellent starting language for making intelligent adjustments. Train seriously, record honestly and let improvement across months settle the argument.
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