What Is a Bro Split? The 5-Day Workout, Evidence and Home Version

A bro split is a workout routine that trains one muscle group per session, typically across five days: chest on Monday, back on Tuesday, shoulders on Wednesday, legs on Thursday and arms on Friday. Each muscle gets one long, high-volume workout a week, then roughly seven days of recovery. It's the classic bodybuilding magazine routine, and despite its reputation it builds muscle fine, provided your weekly volume is high enough. Where it falls down is efficiency and flexibility, and for most people a different split gets the same results with less risk of wasted sessions.

Why it's called a bro split

The name is gym slang. It's the routine you'd pick up from a mate at the gym or a 1990s bodybuilding magazine, so "bro science" and "bro split" stuck. "International Chest Day" (Monday, every commercial gym in the country, every bench taken) is the running joke that comes with it.

You'll also see it called a body part split or a "once a week" split. They mean the same thing: one muscle group, one day, once per week.

The classic 5-day bro split

This is the standard template. Work in the 6 to 12 rep range for the big compound lifts and 10 to 15 for isolation work, and take most sets within one to three reps of failure. Rest 2 to 3 minutes on heavy compounds and 60 to 90 seconds on smaller moves.

Day 1: Chest

Exercise	Sets x reps
Barbell bench press	4 x 6 to 8
Incline dumbbell press	3 x 8 to 10
Weighted dips or decline press	3 x 8 to 12
Cable or dumbbell fly	3 x 12 to 15
Push-ups (to near failure)	2 sets

Day 2: Back

Exercise	Sets x reps
Deadlift or rack pull	3 x 5
Pull-ups or lat pulldown	4 x 6 to 10
Barbell or chest-supported row	3 x 8 to 10
One-arm dumbbell row	3 x 10 to 12
Straight-arm pulldown or pullover	2 x 12 to 15

Day 3: Shoulders

Exercise	Sets x reps
Overhead press (barbell or dumbbell)	4 x 6 to 10
Lateral raise	4 x 12 to 15
Rear delt fly or face pull	3 x 12 to 15
Upright row (wide grip) or cable Y-raise	3 x 10 to 12
Shrugs	3 x 10 to 12

Day 4: Legs

Exercise	Sets x reps
Back squat	4 x 6 to 8
Romanian deadlift	3 x 8 to 10
Leg press or hack squat	3 x 10 to 12
Walking lunge or Bulgarian split squat	3 x 10 each leg
Leg curl	3 x 10 to 12
Standing calf raise	4 x 10 to 15

Day 5: Arms

Exercise	Sets x reps
Close-grip bench press	3 x 6 to 10
Barbell or EZ-bar curl	3 x 8 to 10
Overhead triceps extension	3 x 10 to 12
Incline dumbbell curl	3 x 10 to 12
Triceps pushdown	3 x 12 to 15
Hammer curl	3 x 10 to 12

Days 6 and 7 are rest. Some people put abs on the end of legs or arms day, or split the week as chest, back, rest, shoulders, legs, arms, rest to give the lower back a break between deadlifts and squats.

What the research says about training frequency

This is the part most bro split articles skip, and it's the bit that decides whether the routine is worth running.

The first big look at the question was a 2016 meta-analysis of 10 studies. It found that training a muscle twice a week produced better hypertrophy than once a week, and the authors concluded the major muscle groups should be trained at least twice weekly to maximise growth (Schoenfeld, Ogborn and Krieger, Sports Medicine, 2016). For a few years that was the standard argument against the bro split.

Then the same research group updated the analysis in 2019 with 25 studies, and the picture changed. When weekly volume was matched between groups, there was no significant difference between higher and lower frequencies, including in trained lifters and when upper and lower body were analysed separately. Their conclusion was that, for a given volume, you can pick how often to train a muscle based on personal preference (Schoenfeld, Grgic and Krieger, Journal of Sports Sciences, 2019). Studies that didn't match volume did show a modest edge for higher frequency, which makes sense: training a muscle more often is an easy way to do more total work.

Weekly volume is what matters most. A separate meta-analysis found a graded dose-response relationship, with each extra weekly set linked to slightly more muscle growth (Schoenfeld, Ogborn and Krieger, Journal of Sports Sciences, 2017).

So the honest verdict is this. A bro split isn't inferior because of frequency itself. It's harder to run well because all of a muscle's weekly volume has to fit into one session. Fifteen sets of chest on a Monday means the last five are done tired, and if you skip Monday, your chest goes a fortnight without work. Spreading the same 15 sets over two days avoids both problems, which is why most coaches now default to higher-frequency splits.

Who a bro split suits

It's a reasonable choice if you:

• have a couple of years of consistent training behind you and already know the lifts well
• train primarily for muscle size and appearance rather than strength on specific lifts
• like long, focused sessions and enjoy the pump of hammering one area
• can reliably make five sessions a week, every week
• want shorter recovery overlaps, for example someone with sore elbows who prefers pressing only once a week

Who should pick a different split

Beginners. Getting good at squatting and benching takes practice, and a bro split gives you one session a week on each. Three full-body sessions, or the upper/lower split over four days, will build strength and technique faster in your first year or two.

Anyone chasing strength on the big lifts. Powerlifters and anyone with a bench or squat goal benefit from practising the lift two or three times a week.

People with unpredictable weeks. Shift work, kids, travel: if you regularly lose a day, the once-a-week structure punishes you more than any other split.

Lifters who want twice-weekly frequency but still like body part days. The Arnold split keeps the bodybuilding feel (chest and back, shoulders and arms, legs) but runs it twice a week over six days. Push pull legs is the other common middle ground; our push day workout shows how a pressing session is built in that system.

Bro split vs other splits

Split	Days per week	Frequency per muscle	Best for
Bro split	5	1x	Experienced lifters who like long single-muscle sessions
Full body	3	3x	Beginners, busy schedules
Upper/lower	4	2x	Most people, strength and size together
Push pull legs	6 (or 3)	2x (or 1x)	Intermediates who can train often
Arnold split	6	2x	Advanced lifters chasing size

Home-gym bro split

You can run a bro split at home with far less kit than you'd think. The core setup is a pair of adjustable dumbbells, an adjustable weight bench that inclines, and a pull-up bar. A set of resistance bands helps for face pulls and flyes.

• Chest: flat dumbbell press 4 x 8 to 10, incline dumbbell press 3 x 10, dumbbell fly 3 x 12, deficit push-ups 2 sets to near failure.
• Back: pull-ups 4 x as many as possible, one-arm dumbbell row 4 x 10 each side, chest-supported dumbbell row on an incline bench 3 x 12, dumbbell pullover 2 x 12.
• Shoulders: seated dumbbell shoulder press 4 x 8 to 10, lateral raise 4 x 15, rear delt fly 3 x 15, band face pull 3 x 15.
• Legs: goblet squat 4 x 12, dumbbell Romanian deadlift 4 x 10, Bulgarian split squat 3 x 10 each leg, single-leg calf raise 4 x 15.
• Arms: close-grip dumbbell press 3 x 10, dumbbell curl 3 x 10, overhead dumbbell extension 3 x 12, hammer curl 3 x 12.

Legs are the weak point at home because most adjustable dumbbells top out between 24kg and 40kg per hand. Make up for it with slower lowering (three seconds down), pauses at the bottom and higher rep ranges, and prioritise single-leg work, which needs far less load to be hard. For more equipment ideas, browse our home gym guides.

How to progress on a bro split

Use double progression. Pick a rep range, say 8 to 10, and keep the same weight until you hit the top of the range on every set. Then add the smallest jump you can (2.5kg on a barbell, 1 to 2kg on dumbbells) and work back up.

Because each muscle only gets one shot a week, tracking matters more than on other splits. Write down every set. If a lift stalls for three weeks running, swap the exercise for a close variation rather than grinding on. Every 6 to 8 weeks, or when joints start nagging, take a deload week at roughly half the sets.

Common mistakes

Arms getting more love than legs. Arm day is fun, leg day isn't, and it shows. Put legs early in the week when you're freshest, and never skip it to "make up" for a missed arm session.

Too little weekly volume. Because each muscle only appears once, a 9-set chest day is the whole week's chest stimulus. If you're not growing, add sets before you add new exercises.

Too much in one session. The opposite problem. Twenty-five sets of chest isn't heroic; the back half is wasted. Stop around 16 and push harder on what's left.

Ignoring overlap. Shoulders on Wednesday after chest on Monday and before arms on Friday means your front delts and triceps get hit three days running. If shoulder days feel weak, swap the order so shoulders follow back or legs.

Recommended reads

• Upper/lower split: the 4-day alternative
• Arnold split: six days, twice a week per muscle
• Push day workout
• How to bench press with good form
• The best adjustable dumbbells in the UK