5/3/1: Boring But Big

Jim Wendler's most popular 5/3/1 template for building muscle. Each session pairs the standard 5/3/1 progression on one main barbell lift with 5 sets of 10 reps of the same lift at a lighter weight, then finishes with minimal assistance work. The high-rep supplemental sets drive hypertrophy while the heavy main work maintains and builds strength.

Origin & Philosophy

Boring But Big (BBB) is a supplemental template for Jim Wendler's 5/3/1 system, published on his blog and later expanded in his books Beyond 5/3/1 and 5/3/1 Forever. Wendler — a former Westside Barbell trainee who squatted 1,000 lbs — created BBB to add a straightforward hypertrophy component to 5/3/1.

The philosophy is brutally simple: after your heavy main work, hammer the same movement pattern with high-rep sets at moderate weight. No complicated exercise selection, no fancy periodization for accessories. Just pick up the bar and do 50 reps. The name is literal — it's boring, but it works.

Who It's For

• Experience level: Intermediate (1-3 years). You need solid technique on Squat, Bench Press, Deadlift, and Overhead Press because you'll be doing these lifts for 8 total sets each session, including high-rep sets where form tends to break down.
• Primary goal: Hypertrophy with strength maintenance. The 5/3/1 sets keep you strong; the 5x10 sets build muscle.
• Best suited for: Bulking or maintenance with high caloric intake. The 5x10 sets create significant fatigue and demand good recovery. Not recommended for cutting — if you're in a caloric deficit, use a lower-volume template like First Set Last (FSL).

Pros & Cons

Pros

• One of the best hypertrophy programs for a home gym — the main work only requires a barbell, squat rack, bench, and pull-up bar. Accessories only need a pair of dumbbells.
• Dead simple to follow — just the main lift twice (heavy then light), plus 2 accessories per session
• 50 reps of each main lift per session builds muscle in the exact movement patterns you're trying to get stronger at
• AMRAP sets on the top set provide auto-regulation — you get immediate feedback on whether your Training Max is appropriate
• Only 4 days per week with no complicated exercise rotation

Cons

• The 5x10 Squat and Deadlift sets are brutally fatiguing — expect sessions to run 70-80 minutes including rest between high-rep sets
• Recovery demands are high, especially for lower body days — requires adequate sleep and caloric surplus
• Not appropriate for a cut — the volume is too high to recover from in a caloric deficit

Program Structure

• Split: One main lift per day across 4 days (OHP / Deadlift / Bench / Squat)
• Periodization: Weekly undulating — the 5/3/1 top set changes each week (5+ / 3+ / 1+), while the BBB supplemental volume stays constant at 5x10
• Cycle: 3 working weeks + 1 deload week = 4-week cycle
• Schedule: Fixed weekly — typically Mon/Tue/Thu/Fri or any 4 days that allow at least one rest day between lower body sessions

Exercise Selection & Rationale

Each day focuses on one of the four main barbell lifts: Overhead Press, Deadlift, Bench Press, and Squat. These are the only exercises that follow the 5/3/1 progression and receive BBB supplemental volume.

The BBB supplemental work uses the same lift as the main work. Wendler's reasoning: the best way to get better at a lift is to do more of that lift. Doing Bench Press for 5x10 after your heavy bench work gives you 80 total reps of benching per week (when including warm-ups), which is significantly more practice than most programs provide.

Assistance work follows Wendler's push/pull/core template with two exercises per session. Each day pairs one pulling or arm exercise with one arm or core exercise:

• OHP day: Chin Up balances the pressing with vertical pulling, Skullcrusher adds direct triceps volume
• Deadlift day: Bicep Curl for biceps (deadlifts already train the back), Hanging Leg Raise for core
• Bench day: Triceps Extension for triceps from a different angle than skullcrushers, Hammer Curl for biceps and brachialis
• Squat day: Pull Up for back width, Ab Wheel for anterior core stability

These can be freely swapped for any similar exercise.

Set & Rep Scheme

Main 5/3/1 work follows the standard wave. In the original program, percentages are based on a Training Max (TM = 90% of 1RM). In this Liftosaur implementation, percentages are expressed as % of 1RM directly (pre-converted from TM), so you just need to set your 1RM:

• Week 1 (5s): 1x5 @ 58%, 1x5 @ 67%, 1x5+ @ 76%
• Week 2 (3s): 1x3 @ 63%, 1x3 @ 72%, 1x3+ @ 81%
• Week 3 (5/3/1): 1x5 @ 67%, 1x3 @ 76%, 1x1+ @ 85%

The final set each week is AMRAP — do as many reps as possible while keeping good bar speed. Stop when the bar slows significantly or form breaks down. Don't grind to absolute failure.

BBB supplemental work: 5 sets of 10 reps at 50% of 1RM. This weight should feel manageable for the first 2 sets and challenging by sets 4-5. If you can't complete all 50 reps, the weight is too heavy.

Deload week: All sets drop to 36-54% of 1RM with no AMRAP, and BBB volume drops to 40% of 1RM. This recovery week is essential — don't skip it.

Assistance work: 5 sets of 10 reps each for one pull and one arm or core exercise. These are done at light-to-moderate effort, not to failure.

Progressive Overload

After completing each 3-week working cycle (before the deload), increase your 1RM:

• Overhead Press and Bench Press: +5 lbs
• Squat and Deadlift: +10 lbs

These increments are fixed and apply to your 1RM, which shifts all percentage-based weights up slightly. The slow progression is by design — Wendler's rule is "start too light" and let the weights build over months.

When you stall: If you can't hit the prescribed minimum reps on your AMRAP sets for a full cycle (e.g., getting only 3-4 reps on the 5+ set, or failing the 1+ set entirely), your weights are too heavy. Reduce your 1RM by 10-15% and rebuild.

Deload: Every 4th week. Use lighter weights (36-54% of 1RM) and no AMRAP sets. Don't skip deloads — the BBB volume accumulates fatigue that needs periodic dissipation.

How Long to Run It / What Next

Run BBB for 3-6 cycles (12-24 weeks). It's a template you can return to repeatedly — many lifters cycle between BBB and lower-volume templates like FSL or SSL.

Signs it's time to switch: You're dreading the 5x10 sets every session (mental burnout), recovery is suffering despite adequate sleep/food, or you want to prioritize absolute strength over hypertrophy.

Transition to: BBB 3-Month Challenge (ramps BBB weight from 50% to 70% TM over 3 cycles for more advanced lifters), 5/3/1 Building the Monolith (higher volume, more variety), or 5/3/1 First Set Last (lower volume, better for cutting or recovery phases). Any 5/3/1 template from 5/3/1 Forever works as a follow-up.

Equipment Needed

Barbell, squat rack, bench, weight plates, and a pull-up bar for the main lifts and pulling accessories. A pair of dumbbells or an EZ bar for arm isolation work (Skullcrusher, Triceps Extension, Bicep Curl, Hammer Curl).

Home gym substitutions:

• Skullcrusher → Bench Dip or Triceps Dip (bodyweight, no equipment)
• Triceps Extension → Bench Dip or Triceps Dip
• Bicep Curl / Hammer Curl → extra Chin Up sets (covers biceps without dumbbells)
• Ab Wheel → Hanging Leg Raise or Plank
• Hanging Leg Raise → Ab Wheel or Flat Leg Raise

Rest Times

• Main 5/3/1 sets: 3-5 minutes between working sets. The AMRAP set may need extra recovery before the BBB work.
• BBB 5x10 sets: 60-120 seconds. Wendler recommends keeping these short to maintain training density. The weight is light enough that you shouldn't need more.
• Assistance work: 60-90 seconds. Can be supersetted (e.g., chin ups between skullcrusher sets) to save time.

How to Pick Starting Weights

1. For each main lift, estimate or test your 1 Rep Max (1RM). This Liftosaur program uses 1RM directly — not Training Max.
2. All working percentages are already converted from Wendler's TM-based percentages to 1RM-based percentages (assuming TM = 90% of 1RM). Just set your 1RM and the app calculates everything.

If you don't know your 1RM: Work up to a weight you can do for 3-5 clean reps. Use Brzycki's formula: 1RM = weight / (1.0278 - 0.0278 x reps). Or just use the Liftosaur 1RM calculator.

Common mistake: Setting your 1RM too high. Wendler's core principle is "start too light." If your AMRAP set on Week 1 (5+ day) only gives you 5 reps, your 1RM is probably inflated — you should be getting 7-8+ reps on that set when properly calibrated.

Common Modifications

• BBB 3-Month Challenge: Ramp the BBB weight across 3 cycles — 50% TM in month 1, 60% TM in month 2, 70% TM in month 3. More challenging but drives greater adaptation. During the challenge, Wendler recommends NOT doing AMRAP on the last 5/3/1 set — just hit the prescribed reps.
• Opposite-lift BBB: Instead of doing Bench Press 5x10 after bench 5/3/1, do Overhead Press 5x10 (and vice versa). Same for Squat/Deadlift. Reduces same-pattern fatigue and adds movement variety. Each lift gets trained 2x/week this way.
• 5s PRO variant (from Forever): Replace the AMRAP sets with straight sets of 5 across all 3 weeks. Reduces CNS fatigue and pairs better with the high BBB volume. Recommended in newer Wendler writings.
• Add Face Pull: 3-5 sets of 15-20 reps on pressing days for shoulder health — the program is pressing-heavy.

FAQ

Is 5/3/1 Boring But Big good for beginners?

BBB is an intermediate program — you need 1-3 years of experience and solid technique on squat, bench, deadlift, and overhead press. The 5x10 supplemental sets demand good form under fatigue. Start with 5/3/1 for Beginners if you're newer to lifting.

How many days a week is 5/3/1 Boring But Big?

It's a 4-day program, typically Monday/Tuesday/Thursday/Friday. Each day focuses on one main barbell lift (OHP, deadlift, bench press, or squat) followed by 5x10 of the same lift and two assistance exercises.

What makes Boring But Big different from other 5/3/1 templates?

The defining feature is the 5x10 supplemental sets at 50% of 1RM after your heavy 5/3/1 work. This gives you 50 additional reps of each main lift per session, making it one of the most effective templates for building muscle while maintaining strength.

How does progression work on 5/3/1 BBB?

After each 3-week working cycle, increase your 1RM by 5 lbs for overhead press and bench press, and 10 lbs for squat and deadlift. Every 4th week is a mandatory deload. The BBB supplemental weight stays at 50% of 1RM throughout.

Can I run 5/3/1 BBB on a cut?

Not recommended. The 5x10 sets create significant fatigue that requires adequate caloric surplus and sleep to recover from. If you're cutting, use a lower-volume template like 5/3/1 First Set Last (FSL) instead.

How long should I run 5/3/1 Boring But Big?

Run it for 3-6 cycles (12-24 weeks). Many lifters cycle between BBB and lower-volume templates throughout the year. Move on when you're dreading the 5x10 sets every session, recovery is suffering, or you want to prioritize absolute strength over hypertrophy.