Bodybuilding Training Split Guide: Bro Split vs. PPL vs. Upper/Lower

Anyone building a bodybuilding gym routine eventually hits the same question: which split actually works best for building muscle? The classic bodybuilding split — one muscle group per day — has dominated gym culture for decades, but push/pull/legs and upper/lower splits have become just as common, and each has real tradeoffs for hypertrophy-focused training.

The short answer

• Bro split trains one muscle group per session (chest day, back day, leg day), typically once per week per muscle.
• Push/pull/legs (PPL) groups muscles by movement pattern and, run six days a week, trains each muscle group roughly twice weekly.
• Upper/lower alternates upper and lower body days, also hitting each muscle group about twice a week, usually in 4 days.
• Training each muscle group at least twice a week is generally considered more effective for hypertrophy than once a week, which is the main knock against a strict bro split.
• The best split is the one you can consistently recover from and stick to — all three can build muscle when executed with enough volume and progressive overload.

Bro split

The traditional bodybuilding split dedicates each gym day to a single muscle group: chest, back, shoulders, legs, arms, often over five or six days. Its appeal is focus — you can throw a large amount of volume at one muscle group in a single session without worrying about interference from other body parts trained the same day.

The tradeoff is frequency. Since each muscle is typically only trained once a week, there's a long gap between stimulating a muscle group and training it again, and current thinking in hypertrophy training generally favors higher frequency per muscle when volume is equal.

Push/pull/legs (PPL)

PPL groups exercises by movement pattern: push days (chest, shoulders, triceps), pull days (back, biceps), and leg days. Run six days a week, each muscle group gets trained twice, spreading a similar total volume across more frequent, somewhat smaller sessions rather than concentrating it all in one long session per muscle.

PPL is popular because it balances focus (you're still grouping related muscles together) with frequency (each group comes around every three to four days rather than every seven).

Upper/lower split

Upper/lower splits alternate between full upper-body sessions and full lower-body sessions, commonly across four days a week. Like PPL, it lands each muscle group roughly twice weekly, but with fewer total weekly sessions than a six-day PPL schedule, which makes it more realistic for people who can't commit to the gym six days a week.

Comparing the three splits

Split	Days/week	Frequency per muscle	Best for
Bro split	5-6	~1x/week	Lifters who want long, focused sessions per muscle and have plenty of gym days
Push/pull/legs	6 (or 3 repeated twice)	~2x/week	Lifters who can train often and want higher frequency with grouped movement patterns
Upper/lower	4	~2x/week	Lifters with limited weekly gym days who still want twice-weekly frequency

Which split builds the most muscle?

Total weekly training volume (sets per muscle group) is generally considered the biggest driver of hypertrophy, more so than which specific split delivers it. A well-programmed bro split with high per-session volume and a well-programmed PPL or upper/lower split with volume spread across more frequent sessions can produce similar results, provided the total weekly volume and progressive overload are comparable.

Where splits genuinely differ is around a lifter's actual life: recovery capacity, how many days a week they can realistically train, and which structure they'll stick to consistently for months. A theoretically superior split that gets skipped half the time loses to a "worse" split that gets done every week.

How to choose

• Limited gym days (3-4/week): upper/lower or a 3-day full-body approach fits better than a 5-6 day bro split.
• Plenty of gym days (5-6/week) and enjoy long, focused sessions: a bro split or 6-day PPL can work well.
• New to structured training: starting with a simpler 3-day split or upper/lower makes it easier to learn form and build the habit before adding complexity.
• Stuck on your current split: the issue is more often inconsistent volume or lack of progression than the split itself — check how to break a training plateau before switching structures entirely.

The bottom line

No single split is definitively "best" for bodybuilding — bro split, PPL, and upper/lower can all build muscle when total volume and progression are solid, and the right choice mostly comes down to how many days you can realistically train each week. Whichever split you pick, GymMonster's saved routines make it easy to set up the split once and log every session against it, so you can see at a glance whether you're actually hitting each muscle group as often as your program intends.