Bro Split
One muscle per day, five days a week. Unfashionable, effective, and the reason most 2000s bodybuilders looked the way they did.
What is a Bro Split split?
The 'bro split' is a 5-day training structure that dedicates one day to each major muscle group — chest Monday, back Tuesday, shoulders Wednesday, arms Thursday, legs Friday. It dominated bodybuilding from the 1980s through the 2010s and is still used by millions of lifters today.
Overview
Modern research favors higher-frequency splits (twice-per-week per muscle) for muscle growth, which made the bro split unfashionable in coaching circles. But the actual evidence is more nuanced — bro splits still work, and for advanced lifters chasing specific lagging body parts, they're often the best structure.
Bro splits demand discipline. You get one shot per muscle per week, so every session has to count. Programming has to include high volume, variation, and progressive overload to keep up with higher-frequency approaches.
Weekly Schedule
| Day | Session |
|---|---|
| Monday | Chest |
| Tuesday | Back |
| Wednesday | Shoulders |
| Thursday | Arms |
| Friday | Legs |
| Saturday | Rest |
| Sunday | Rest |
Sample Workouts
Chest Day
Maximum chest stimulus
- Bench press — 4×6–8
- Incline dumbbell press — 3×8–12
- Dips — 3×8–12
- Cable crossover — 3×12–15
- Push-up drop set — 2×AMRAP
Back Day
Lats, mid-back, rear delts
- Deadlift — 3×5
- Pull-ups — 4×8
- T-bar row — 3×8–10
- Lat pulldown — 3×10–12
- Seated cable row — 3×10–12
Shoulders Day
All three deltoid heads + traps
- Seated dumbbell press — 4×6–8
- Lateral raise — 4×12–15
- Rear-delt flye — 3×12–15
- Face pulls — 3×12
- Shrugs — 3×10
Arms Day
Biceps + triceps volume
- Barbell curl — 4×8
- Skull crushers — 4×8–10
- Preacher curl — 3×10–12
- Tricep pushdown — 3×10–12
- Hammer curls — 3×10
- Overhead tricep extension — 3×10
Legs Day
Quads, hamstrings, glutes, calves
- Squat — 4×6–8
- Romanian deadlift — 3×8
- Leg press — 3×10–15
- Leg extension — 3×12–15
- Leg curl — 3×12–15
- Standing calf raise — 4×10
Best For
- + Advanced physique-focused lifters
- + Anyone chasing a specific lagging muscle
- + Lifters who genuinely prefer one-muscle-per-day focus
- + Pre-contest bodybuilders
Not For
- − Beginners
- − Strength/powerlifting goals
- − Time-constrained lifters
- − Anyone who can't train 5 specific days per week
Pros
- + Maximum volume per muscle per session
- + Very focused — no fighting recovery across muscles
- + Simple to program
- + Classic and battle-tested
Cons
- − Once-per-week frequency is suboptimal for hypertrophy research
- − Demands 5 training days
- − Long sessions
- − Strength gains plateau faster than on 4-day splits
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Frequently Asked Questions
What is a bro split?
A bro split dedicates one day per week to each major muscle group — chest, back, shoulders, arms, and legs. It's a 5-day training structure that was the dominant bodybuilding approach in the 1980s–2010s.
Does a bro split actually work?
Yes, especially for advanced lifters. Research suggests twice-per-week frequency edges out bro splits for hypertrophy, but the difference is small. If you train hard and use enough volume, bro splits still build impressive physiques.
Is a bro split good for beginners?
No. Beginners grow fastest with 3-day full-body splits because they can practice compounds 3x per week. A bro split wastes the rapid-growth window of the novice stage.
Bro split vs PPL — which is better?
For most intermediates, PPL wins because it hits every muscle twice per week. Bro splits edge out PPL for very advanced lifters chasing specific body parts, or anyone who genuinely prefers the one-muscle-per-day focus.
How many sets per muscle on a bro split?
15–25 sets per muscle per session is the typical range. That's high for a single session, which is why bro splits work despite low frequency — the sheer volume per session drives growth.