When lifters talk about gaining muscle size while still getting stronger, one name comes up more than almost any other: Boring But Big. Created by Jim Wendler as part of his 5/3/1 system, BBB has become the single most popular assistance template in modern strength training. It is straightforward, it is repetitive, and it works. The name says it all. The work is boring. The results are big.
Unlike many hypertrophy programs that rely on complex periodization, supersets, or exotic exercise selections, Boring But Big strips things down to the basics. You perform your main 5/3/1 work, then follow it with five sets of ten repetitions on a single movement at a moderate weight. That is the entire template. The simplicity is the point. You do not need to think about what comes next or whether you are hitting every muscle group from the right angle. You just do the work, add weight over time, and grow.
In this guide we will cover everything you need to know about running Boring But Big effectively. We will break down the set and rep scheme week by week, go over exercise selection, compare the different BBB variations, and cover the most common mistakes lifters make when running the template. Whether you are a beginner looking for your first serious hypertrophy program or an intermediate lifter trying to break through a size plateau, BBB has something to offer.
What Is Boring But Big
Boring But Big is an assistance work template from Jim Wendler's 5/3/1 program. It was designed to solve a simple problem: most lifters do enough heavy low-rep work but fail to accumulate enough volume to drive hypertrophy. The main 5/3/1 sets and reps build strength and neural efficiency. BBB provides the volume stimulus needed for muscle growth.
The core idea is that after you complete your main 5/3/1 work for the day, you perform five sets of ten reps on a related compound movement at a percentage of your training max. The percentages are moderate, usually between fifty and sixty percent of your training max. This is heavy enough to stimulate growth but light enough that you can recover from the high volume without burning out.
Jim Wendler has described BBB as the assistance template for people who want to get bigger and stronger but do not want to spend hours in the gym doing dozens of different exercises. It fits perfectly into the 5/3/1 framework because it complements the low-rep main work without interfering with recovery between training days.
How BBB Works
The mechanics of Boring But Big are simple. After your main 5/3/1 sets for a given lift, you perform five sets of ten reps on the same lift or a related variation. The weight used is a percentage of your training max, not your actual max. This distinction matters because Wendler programs all 5/3/1 work off a training max set at eighty-five to ninety percent of your true one-rep max.
Here is how a typical BBB session on squat day might look:
- Squat 5/3/1 main work: three sets at prescribed percentages
- Squat BBB work: five sets of ten reps at fifty percent of training max
- Total working reps for the day: three main sets plus five sets of ten = fifty-eight working reps
That volume is significant. Over a four-week cycle, the accumulated volume adds up quickly and provides a strong hypertrophy stimulus. The moderate weight means you are not grinding through each rep with maximal loads, but the cumulative fatigue from five sets of ten creates a metabolic and mechanical stress that drives muscle growth.
Rest periods between BBB sets are typically kept short, usually between sixty and ninety seconds. This keeps the metabolic stress high and keeps the workout moving. Some lifters prefer longer rest periods, especially on bigger movements like squats and deadlifts, and that is fine. The key is consistency over time, not perfection in any single session.
BBB Set and Rep Scheme
The BBB template follows the same four-week cycle as the main 5/3/1 program. Each week, the weight on your BBB sets stays the same. The progression happens across cycles by increasing your training max, which in turn increases the weight used on your BBB sets.
Week One: 5/3/1 5x5 Week
Main work: 65%x5, 75%x5, 85%x5. BBB work: 5x10 at 50% of training max. This is the lightest week for BBB and serves as an introduction to the volume for the cycle.
Week Two: 5/3/1 3x3 Week
Main work: 70%x3, 80%x3, 90%x3. BBB work: 5x10 at 50% of training max. The main work gets heavier but BBB stays the same. By this point your body is adapting to the volume.
Week Three: 5/3/1 5/3/1 Week
Main work: 75%x5, 85%x3, 95%x1. BBB work: 5x10 at 50% of training max. This is the heaviest main work week. Fatigue from the top set may make the BBB work feel harder even though the weight has not changed.
Week Four: Deload
Main work: 40%x5, 50%x5, 60%x5. BBB work: 5x10 at 40% of training max or omitted entirely. Most lifters skip BBB on deload week or reduce it significantly. This allows full recovery before the next cycle.
After the four-week cycle, you add two and a half pounds to your upper body training max and five pounds to your lower body training max. The new training max increases the BBB weight proportionally, providing a gradual progression in volume load over time.
| Week | Main Work | BBB Sets x Reps | BBB % of TM |
|---|---|---|---|
| 1 | 5/5/5 | 5 x 10 | 50% |
| 2 | 3/3/3 | 5 x 10 | 50% |
| 3 | 5/3/1 | 5 x 10 | 50% |
| 4 | Deload | Skip or 5x10 at 40% | 40% |
Exercise Selection for BBB
Jim Wendler recommends matching your BBB assistance exercise to the main lift of the day. The most common approach is to do the same movement for both. On bench press day you bench for your main work and then bench again for BBB. On squat day you squat for both. This keeps things simple and ensures you are building volume on the movement patterns that matter most.
However, Wendler has also endorsed using variations. For example, if you are squatting with a barbell for your main work, you could do leg press or front squat for BBB. On bench day you could use dumbbell bench press or close-grip bench press. The key rule is that the assistance work should support the main lift, not compete with it. Heavy barbell rows on deadlift day can be problematic because they tax the same muscles and patterns. Lighter rows or pull-ups are a better choice.
A practical exercise selection framework for BBB looks like this:
- Squat day: Barbell squat, front squat, leg press, or goblet squat
- Bench press day: Barbell bench press, dumbbell bench press, close-grip bench press, or incline bench press
- Deadlift day: Conventional deadlift, Romanian deadlift, or trap bar deadlift
- Overhead press day: Barbell overhead press, dumbbell overhead press, or push press
The simplest approach for most lifters is to just do the same exercise. This is what Wendler originally programmed and what the majority of successful BBB runners do. Save variations for when you have a specific reason to use them.
BBB Variations
Over the years Jim Wendler has released several variations of the original Boring But Big template. Each one adjusts the percentages, volume, or structure to suit different goals and training ages.
Original BBB
This is the version described above. Five sets of ten at fifty percent of your training max on the same exercise. It is the most commonly run version and the one most lifters should start with. The fifty percent figure was chosen because it balances volume with recovery. You get enough stimulus to grow without destroying your ability to train hard on your main work.
BBB Beefcake
BBB Beefcake is a harder, more aggressive variation. The main difference is that the assistance percentage is raised to sixty to sixty-five percent of your training max. Some versions also increase the number of sets. This is not a template for beginners. It is designed for intermediate to advanced lifters who have built a solid base and can handle the increased workload. Beefcake produces faster size gains but demands more from your recovery. Sleep, nutrition, and stress management become critical when running this variation.
BBB Challenge
The BBB Challenge is a shorter, more intense burst of volume. Instead of running it across a full four-week 5/3/1 cycle, the challenge typically involves a condensed period of higher volume work. It is often used as a finisher or a focused block of hypertrophy work before returning to a standard 5/3/1 cycle. The challenge is not meant to be run indefinitely. It is a tool for breaking through plateaus or kickstarting a gaining phase.
BBB with Different Exercises
Wendler has also suggested variations where you pair different exercises for the main work and assistance work. For example, doing bench press for your main 5/3/1 work and then rows for your BBB sets. This approach turns BBB into more of a full-body or upper-lower assistance template. It works well for lifters who want more balanced development or who find doing the same movement twice in one session mentally draining.
Programming BBB into 5/3/1
Fitting BBB into a 5/3/1 schedule depends on your training split. Wendler has offered several options over the years. The two most common approaches are the two-day full-body split and the four-day split.
Two-Day Full Body
You train twice per week. Day one covers squat and bench press. Day two covers deadlift and overhead press. Each day you do the main work for both lifts followed by BBB sets for each. This is a time-efficient approach that works well for lifters with busy schedules. Each session is longer because you are doing four main work blocks and ten total BBB sets, but you only need two days per week.
Four-Day Upper Lower
You train four days per week. Day one is squat and overhead press. Day two is bench press and deadlift. Day three repeats the first day and day four repeats the second. You do BBB sets for the main lift of each day. This spreads the volume across more sessions and allows for slightly shorter workouts. It also means you hit each muscle group twice per week, which some research suggests is optimal for hypertrophy.
Three-Day Full Body
An intermediate option is a three-day full-body schedule. You squat and bench on day one, deadlift and press on day two, and then rotate on day three. BBB sets follow each main lift. This gives you more recovery time between sessions compared to a four-day split while still providing adequate frequency.
Regardless of which split you choose, the key programming principle is that BBB sets always follow the main work for that lift. Never do your BBB sets before your heavy work. The main sets are the priority. BBB is assistance, and it should be treated as such.
BBB vs Other Hypertrophy Programs
BBB exists in a crowded field of hypertrophy programs. Programs like Starting Strength, classic 5x5 routines, PHUL, and nSuns all claim to build muscle. How does BBB compare?
The main advantage of BBB is its simplicity. There are no complex RPE calculations, no percentage ladders that change every week, and no long lists of accessory exercises. You do your heavy work, you do your volume work, and you go home. For lifters who have analysis paralysis or who spend more time planning their workouts than doing them, BBB removes all the guesswork.
Compared to traditional 5x5 programs, BBB provides significantly more hypertrophy volume. A standard 5x5 session might give you twenty-five total reps on the main lift. BBB gives you fifty-eight. That difference in volume is the primary driver of muscle growth. 5x5 is excellent for building strength, especially for beginners, but it plateaus quickly for size gains. BBB solves that problem.
PHUL and nSuns offer more variety in exercise selection and rep ranges, which some lifters prefer. The trade-off is complexity and longer sessions. If you enjoy variety and do not mind a more intricate program, those can be good options. If you want maximum results with minimum thinking, BBB wins.
Where BBB really shines is in its long-term sustainability. Because the progression is slow and steady, you can run it for months or even years without burning out. Wendler himself has talked about running variations of BBB for extended periods. Most hypertrophy programs are designed for eight to twelve weeks. BBB is designed for life.
Benefits of BBB
- Proven track record: Thousands of lifters have used BBB to add significant muscle mass. It is one of the most battle-tested templates in strength training.
- Simplicity: The template requires minimal planning. You know exactly what to do every session.
- Progressive overload: The slow, steady increase in training max ensures that your BBB sets get heavier over time, providing continuous growth stimulus.
- Compatible with any level: Beginners can run the original version. Advanced lifters can use Beefcake or other harder variations.
- Mental simplicity: Because the work is repetitive, you can zone in and execute. There is no decision fatigue during the workout.
- Recovery friendly: The moderate weight on BBB sets means you are not crushing yourself, allowing you to recover between sessions and maintain intensity on main work.
- Flexibility: You can run BBB on any 5/3/1 split and pair it with any assistance exercises that support your main lifts.
Common Mistakes
Despite its simplicity, lifters make several mistakes when running BBB that undermine their results.
Using too much weight on BBB sets. The most common error. Fifty percent of your training max is not fifty percent of your one-rep max. If your squat training max is three hundred pounds, your BBB weight is one hundred fifty pounds. Many lifters see that number and think it is too light, so they add weight. This defeats the purpose. The moderate load is what allows you to accumulate volume without destroying your recovery. If you want to go heavier, move to BBB Beefcake, which is specifically designed for that.
Skip the deload week. Wendler includes deload weeks for a reason. Your body needs periodic recovery, especially when running a high-volume template like BBB. Skipping deloads might feel productive in the short term, but it leads to accumulated fatigue, stalled progress, and eventually injury. Take the deload week seriously.
Changing assistance exercises every session. Part of what makes BBB work is the consistency. Doing the same movement for weeks allows you to groove the pattern and track your progress. Switching exercises constantly means you are always learning the movement instead of getting better at it. Pick an exercise and stick with it for the entire cycle.
Neglecting nutrition. BBB creates a significant caloric and protein demand. If you are not eating enough, the volume work will leave you smaller and weaker rather than bigger and stronger. Aim for a caloric surplus and at least zero point seven to one gram of protein per pound of bodyweight per day.
Adding extra assistance work. BBB is not designed to be combined with long lists of isolation exercises. The volume from the BBB sets is already substantial. Adding twenty sets of curls and tricep extensions on top of your BBB work creates a recovery deficit that will eventually catch up with you. Trust the template. If you want more work, run a harder variation of BBB rather than piling on extras.
Resting too long between BBB sets. The metabolic stress from short rest periods is part of what makes BBB effective for hypertrophy. Resting five minutes between each set of ten turns it into a strength session rather than a volume session. Keep rest between sixty and ninety seconds for most exercises. You can extend to two minutes on heavy squat and deadlift days if needed.
Frequently Asked Questions
Can beginners run Boring But Big?
Yes, but with a caveat. Beginners should run the original version at fifty percent and focus on mastering the main lifts first. The BBB sets will build work capacity and teach you how to handle volume. If you are brand new to barbell training, consider starting with a simpler program like a basic 5x5 for a few months before transitioning to 5/3/1 with BBB assistance.
How long does it take to see results from BBB?
Most lifters notice visible size gains after two to three full cycles, which is roughly eight to twelve weeks. Strength gains from the main 5/3/1 work typically appear sooner, often within the first cycle. Consistency with training and nutrition is the primary factor. If you are eating enough and sleeping well, results will come.
Should I do BBB for every lift or just one?
You can run BBB for all four main lifts or just one or two. Some lifters prefer to do BBB only on their weaker lifts or the lifts they want to prioritize for size. Running BBB on all four lifts is the standard approach and works well for most people, but it is not mandatory. Listen to your recovery and adjust as needed.
Can I do BBB with bodyweight exercises for assistance?
BBB is specifically designed around barbell or machine exercises where you can precisely control the weight and track progression. Bodyweight exercises like push-ups or pull-ups do not fit the BBB framework well because the load is fixed. If you want bodyweight assistance work, consider the Boring But Big supplemental template or Wendler's other assistance templates like First Set Last.
What should I do if 5x10 at fifty percent feels too easy?
If it consistently feels too easy for several sessions, your training max may be set too low relative to your current strength. Wendler recommends setting your training max at eighty-five to ninety percent of your true max. If you have been running 5/3/1 for a while and hitting all your reps easily, it may be time to reset your training max to a more accurate number. Alternatively, progress to BBB Beefcake for a cycle.
Is BBB better for size or strength?
BBB is primarily a hypertrophy template. The main 5/3/1 work handles the strength side. Together, they build both. If your primary goal is size, BBB is one of the best templates available. If your primary goal is strength with minimal size gain, you might prefer a lower-volume assistance template like First Set Last or the original 5/3/1 assistance work.
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