Boring But BigWorkout guide.

Choose a recoverable five-set workload

Boring But Big adds a clear muscle-building task to 5/3/1: after the main work, complete five sets of ten with a lighter load. The exercise list can look modest. The repeated work, particularly for squats and deadlifts, deserves more respect than its percentage might suggest.

Begin with the Boring But Big companion planner. Check the main lift's training max, the selected supplemental exercise and the percentage used for its five sets. Those are separate decisions. A useful plan makes all three visible instead of assuming that a heavy single determines every load in the workout.

This guide focuses on the public basic BBB arrangement alongside classic 5/3/1 main work. The three-month challenge and later versions have different instructions. Choose one before you start, then give yourself a fair chance to evaluate the workload you actually perform.

Understand the three parts of the session

The main lift uses the percentage and rep structure of your selected 5/3/1 version. Supplemental work supplies the five sets of ten. Assistance fills the remaining selected role without turning the day into an unlimited list of exercises.

Those categories help explain a difficult session. A problem with the main-lift training max is different from selecting too much weight for fifty supplemental reps. A long assistance menu can also affect recovery even if the two headline parts of the workout were calculated correctly.

Read the classic 5/3/1 guide for the four-week main-lift table and the difference between a true maximum and a training max. In the basic classic arrangement, the final main set can allow additional reps. That should not be confused with a requirement to turn every supplemental set into a rep-max attempt.

Keep the basic template separate from the challenge

Wendler's public Boring But Big article describes several options for exercise pairing and load selection. It gives a moderate percentage range as general guidance while recommending much lighter beginnings for newcomers to the lower-body volume.

The three-month challenge is a different prescription. Its supplemental percentages move through 50%, 60% and 70% of training max across the three months, and the main-lift final sets stop at the required reps. It is explicitly arranged for four training days.

Combining the challenge's increasingly demanding supplemental work with every extra-rep instruction from the basic template creates a hybrid. It may be more work, but that does not make it the version either article describes.

Write the version and supplemental percentage at the top of your sheet. If you choose a different version next cycle, record the change instead of overwriting the old plan. That makes the effect of the change easier to evaluate.

Decide whether BBB fits your current capacity

BBB can suit a lifter who already knows the main lifts, likes a small exercise menu and wants substantial repeated work after a focused main-lift task. It is also convenient when a gym has ordinary barbell equipment but not a long list of specialist machines.

It is less convenient when you repeatedly run out of time after the main sets, cannot recover from the supplemental lower-body work, or already have a large amount of demanding physical activity elsewhere. The relevant question is whether you can complete and recover from the chosen work consistently.

Do not choose the highest percentage because a lower number looks unimpressive. Five sets are a different task from one comfortable set. The last two sets and the next relevant training day tell you more about the choice than the first ten reps alone.

If you prefer more exercise variety and a different weekly organization, compare PHUL. If you are still establishing basic barbell practice, Starting Strength may be a more direct place to begin. These are practical differences in structure, not a ranking of which community trains hardest.

Choose same-lift or paired-lift supplemental work

The public basic article allows the five-set work to use the day's main lift or an associated lift on another day. The following table summarizes its paired-lift option; the exact dates can move to fit a suitable schedule.

The same-lift option instead repeats the main exercise for the supplemental work. Choose one organization and keep it stable long enough to understand how it feels. Switching pairings every week makes the distribution of stress harder to interpret.

The paired option gives the movement two different roles across the week. That does not mean the two sessions should use the same load. The supplemental bench percentage belongs to the bench's own training base, even on a day whose main lift is the press.

The basic article also discusses three-day use. That is separate from calling the explicitly four-day challenge a three-day program. Keep the distinction visible whenever your schedule and source version differ.

Start the supplemental work lighter than your ego prefers

The basic article recommends starting around 30% of training max for people new to this volume, particularly for lower-body work. Its broader guidance includes higher percentages, but the first exposure is a chance to establish tolerance rather than prove that you can survive the largest number in a range.

Use a training max that already makes sense for the main lift. A generous base followed by a generous supplemental percentage compounds the problem. If the base is 100 kg, 30% produces 30 kg and 50% produces 50 kg. Across fifty reps, that is a substantially different task even though both loads feel light compared with a single heavy set.

Be attentive when a percentage falls below your available bar weight. A press training max of 40 kg gives only 12 kg at 30%. A standard 20 kg bar cannot represent that calculation. Use suitable lighter equipment or a deliberately selected alternative rather than silently loading the bar and pretending the prescribed percentage was followed.

The plate calculator helps with total loads and available increments. Keep the physical load you actually used in the record, especially when rounding changes a light percentage meaningfully.

Work through a complete loading example

Consider an illustrative basic-template session with a squat training max of 100 kg and a selected 30% supplemental load. The main sets come from the current classic week. After completing them, the supplemental target is five sets of ten at 30 kg.

The target is fifty controlled reps arranged as those five sets. A result of 10, 10, 10, 8 and 7 is forty-five reps and an incomplete prescription. It may still be useful training, but the record should show what happened. Do not replace the last two entries with ten because you completed some extra reps later in an unrelated exercise.

If all five sets are completed with a consistent range and a manageable recovery cost, retain the selected progression approach. If you hold the percentage steady while the training max increases across cycles, the supplemental load can rise with that base. You do not also need to add another unplanned increase every time the first set feels comfortable.

If you select 50% in a later cycle, record that as a separate change. Raising both the base and the supplemental percentage can create a larger increase than either number suggests alone. Check the complete calculation before beginning the session.

Keep supplemental reps consistent

Repeated work can reveal small technique changes that were less obvious in short sets. On a squat, fatigue may gradually change depth or balance. On a hinge, the starting position or range may drift. A final set of ten shortened reps should not be treated as identical to the first set of ten full reps.

Use a small number of familiar cues. Review squat form, overhead press setup or the RDL guide before training if that movement needs attention. During the session, concentrate on the movement rather than trying to apply a new technical theory to every rep.

Rest enough that the next set remains the intended exercise. A lighter percentage does not require rushing. If shorter rests change the limiting factor to breathlessness or technique deterioration, the workout has changed even though the printed weight is the same.

For painful movement or a substantial loss of control, stop and obtain appropriate guidance. The supplemental target is a training prescription, not a reason to continue a movement that no longer resembles the one you planned.

Troubleshoot the right part of the workout

If the main sets are difficult before supplemental work begins, inspect the training max, current ability and preparation. Reducing the five-set work may help later recovery, but it does not correct an incorrectly entered main-lift base.

If the main sets are steady but the supplemental sets repeatedly collapse, inspect the supplemental load and the effort of the main final set. Starting lower, resting adequately or choosing a documented version with a different effort prescription may solve the actual limitation.

If the workout is completed but the next relevant session suffers, examine the total weekly workload. Assistance, conditioning, physical work and the arrangement of lower-body sessions all matter to the practical recovery picture. A graph containing only main-lift percentages cannot show that whole picture.

Change one substantial variable at a time when possible. Keeping the load while shortening the accessory menu gives a clearer comparison than simultaneously replacing exercises, changing percentages and adding a new conditioning plan. Write the reason for the change so your next review has something to test.

Use deloads across the whole session

Classic 5/3/1 reduces the main work in the fourth week. BBB's public basic notes also allow judgment about supplemental volume, including reducing five sets of ten to three sets of ten. The main table becoming light does not automatically mean that every other part of the day should remain maximally demanding.

Choose the adjustment that belongs to your version and circumstances, and record it. A lower-stress week should be recognizable when you read the log later. If you replace reduced supplemental work with a large amount of hard assistance, you may have preserved much of the stress you intended to reduce.

Distinguish a deload from a lasting reset of the training max. A planned light week within the cycle does not by itself establish that the base is wrong. Repeated inability to perform the main required reps, however, deserves a separate review of that base.

Substitute with the new movement's own baseline

The public article allows related supplemental variations, but their numbers need their own meaning. A front squat load is not determined by a universal fraction of your back squat. A trap-bar deadlift does not automatically share the straight-bar deadlift's training max.

If you want percentage-based loading for a different lift, establish a sensible base for that lift. If you use dumbbells or an accessory where percentages are awkward, choose a manageable load by observed performance and record the actual weight. Do not make the arithmetic appear more precise than your knowledge of the exercise.

Give a permanent substitution its own history. Keep the older movement in the record instead of rewriting previous sessions. The new exercise may be a good choice, but it becomes a new comparison rather than a shortcut to claiming a sudden strength improvement.

Keep assistance and conditioning proportional

The basic public template uses a short assistance arrangement, including pulling and abdominal work in its examples. Read that arrangement as part of a complete workload. It is not a blank invitation to add another full bodybuilding session after fifty supplemental reps.

Pick additions for a clear purpose and check whether they support the next session. If extra work grows automatically whenever you have spare time, the routine can become much larger than the one you originally chose. Planned simplicity is useful only if it survives the gym floor.

Conditioning also belongs in the record when its workload changes. A new set of hard intervals can matter more to recovery than a small percentage change in the spreadsheet. Choose conditioning that fits your goals and current capacity, then evaluate the combination you actually perform.

Resume after a missed session

Keep the next main-lift session in the queue after an isolated missed appointment. Do not rush two lower-body sessions together or discard the supplemental exercise that always falls on your busiest day. Let the dates move while preserving the intended structure.

After a longer break, review both the main base and your tolerance for fifty-rep work. You may recover familiarity with the movement before recovering tolerance for all the volume. A conservative return can therefore involve the supplemental prescription as well as the heavy sets.

Document a return session separately. The log should explain that the workload changed because training was interrupted, rather than implying that the previous cycle failed without a cause.

Review recoverable work, not just completed tonnage

This illustrative before/after training record shows several ways to read a training block. It is not a personal transformation, a promised time frame or proof that one template is superior.

Total load multiplied by reps can describe work, but it does not by itself prove more muscle growth. Technique, effort, exercise choice and the ability to keep training give the number context. Use the record to decide whether the selected volume is productive and sustainable for you.

Export the companion plan with its assumptions and actual-result fields. Before the next session, verify the main lift, the supplemental lift and the correct base for each. That small preparation prevents the most avoidable BBB error: performing a demanding amount of work calculated from the wrong number.

Sources and further reading

Primary sources checked on 15 October 2026: Jim Wendler's Boring But Big, the separate three-month challenge, and his classic 5/3/1 article. The original books provide the full selected template. Trainer's examples and calculator are independent companion material, with the version and loading assumptions identified.