Push Pull Legs vs Upper/Lower vs Full Body: Which Split Should You Run?

The split debate keeps recycling because each style has a real trade-off — and the right choice depends on how many days per week you can actually train, not which split is most popular online. Here's a practical comparison built around our ICP: gym-goers who want clear structure and consistent results, not advanced bodybuilding splits.

Quick Answer

If you can train 3 days per week, run a full-body routine. If you can train 4 days, run an upper/lower split. If you can train 6 days, run push pull legs. The best split is the one that fits your real schedule — frequency you can sustain for 8+ weeks beats any plan you abandon in week 3.

The Three Splits at a Glance

Full Body (3 Days per Week)

Every session hits every major muscle group. You squat, bench press, row, and add accessories — all in one workout. Three sessions per week, ideally Monday/Wednesday/Friday so each muscle group recovers before the next session.

Why it works for beginners: You practice the main compound lifts three times per week. That's the highest-leverage pattern for building both technique and strength. You also can't accidentally undertrain a muscle group — every session covers everything.

Trade-offs: Sessions run 60–75 minutes if you do enough volume. If you have 30 minutes, full body becomes hard to fit. Also, total volume per muscle per session is limited because you're spreading work across the whole body.

Upper/Lower Split (4 Days per Week)

Two upper-body days (chest, back, shoulders, arms) and two lower-body days (quads, hamstrings, glutes, calves) per week. A common layout: Monday upper, Tuesday lower, Thursday upper, Friday lower.

Why it works for intermediates: You hit each muscle group twice per week — still inside the optimal frequency range — but you can do more volume per session because you're focused on half the body. It's the most balanced trade between frequency and volume.

Trade-offs: You need 4 reliable training days per week. If you regularly miss one, you drop a muscle group to once per week, which is below the effective range. Also, leg days can be brutal — splitting volume across two days helps but doesn't eliminate the fatigue.

Push Pull Legs (6 Days per Week)

Push (chest, shoulders, triceps), pull (back, biceps), and legs — typically run as 6 days on, 1 off, then repeated. Each muscle group is trained twice per week.

Why it works for advanced lifters: You can push high volume per session because you're only training a few muscle groups at a time. The split also separates antagonist muscles cleanly, so you're not hitting triceps right after chest the way you might in full body.

Trade-offs: Six days per week is a real commitment — vacations, sickness, and life events disrupt it more than 3- or 4-day plans. PPL is also overkill for most beginners and intermediates, who get equal results from less volume.

Frequency Beats Split Style

The most consistent finding in hypertrophy research is that training a muscle group 2–3 times per week outperforms training it once per week at equal weekly volume. A 2016 meta-analysis by Schoenfeld et al. (Sports Medicine) found that higher-frequency training produced significantly greater gains than once-per-week "bro splits" — even when total volume was matched.

This is why all three splits above hit each muscle 2–3x per week. The split style is mostly a scheduling choice; the frequency is what drives results.

How to Choose

Choose Full Body if: You're new to lifting (under 6 months), you can train exactly 3 days per week, or your schedule changes week to week and missing a session would otherwise leave a muscle group untrained.

Choose Upper/Lower if: You've been training 6+ months, you can reliably hit 4 days per week, and you want more volume per session than full body allows.

Choose Push Pull Legs if: You can train 6 days per week without that schedule collapsing in week 4. If you can't, drop back to upper/lower — you'll get better results from a split you actually run than a split you partly run.

What About Body Part Splits?

The classic "chest day, back day, shoulder day, arm day, leg day" rotation hits each muscle once per week. The research above is clear that this is suboptimal for hypertrophy at the same total volume. The exception: advanced lifters running specialization phases for a specific muscle group, where spreading volume across the week would compromise per-session intensity.

For 95% of gym-goers, the three splits above cover the useful ground.

The Bottom Line

Pick the split that matches your real availability. Full body for 3 days, upper/lower for 4 days, push pull legs for 6 days. Run it for at least 8 weeks before judging it. And if you're picking between "the optimal split" and "the split you'll actually do" — always pick the second.

For more on how to structure your training, see our guides on the 6-12-25 method and heavy weights vs high reps.