Upper/Lower Split: A 4-Day Routine That Works

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What upper/lower is

An upper/lower split divides your training into two day types. Upper days train all the muscles above the hips: chest, back, shoulders, and arms. Lower days train everything from the hips down: quads, hamstrings, glutes, and calves.

Over a standard 4-day week, you train each half of the body twice. This gives you the twice-per-week frequency that most sports science and practical experience points to as the sweet spot for intermediate lifters, without requiring the six-day commitment of a full push pull legs rotation.

The split has been around for decades and was a staple in powerlifting and bodybuilding programs long before “training splits” became a common topic. Its staying power reflects something simple: it works.

The 4-day template

Here is a clean weekly structure. The exact days can shift to fit your schedule — what matters is keeping at least one rest day between sessions that hit overlapping muscle groups.

The A and B designation is optional. Some lifters keep both upper days identical for simplicity. Others make Upper A more compound-heavy and strength-focused (sets of 4–6 reps) and Upper B more volume-oriented with higher reps and more isolation work (sets of 10–15). The same variation can apply to lower days. Either approach is valid; choose what you can sustain and track.

Sample exercises by day

The exercises below prioritize compound movements first, which deliver the most stimulus per set, followed by accessory work to fill volume and address specific muscles. You do not need to copy this list exactly — substitute exercises you can perform with good technique and steady progressive overload.

1. Upper A — strength emphasis

   Barbell bench press (4 × 4–6), barbell row (4 × 4–6), overhead press (3 × 6–8), pull-ups or lat pulldown (3 × 6–8), dumbbell lateral raises (3 × 12–15), tricep pushdowns (2 × 12–15).

2. Lower A — strength emphasis

   Back squat (4 × 4–6), Romanian deadlift (3 × 6–8), leg press (3 × 8–10), leg curl (3 × 10–12), calf raise (3 × 12–15).

3. Upper B — volume emphasis

   Incline dumbbell press (4 × 8–12), cable or dumbbell row (4 × 10–12), seated dumbbell overhead press (3 × 10–12), face pulls (3 × 15–20), bicep curls (3 × 10–15), chest fly or pec deck (2 × 12–15).

4. Lower B — volume emphasis

   Front squat or hack squat (3 × 8–12), conventional deadlift or trap bar deadlift (3 × 5–8), walking lunges (3 × 12 per leg), leg extension (3 × 12–15), leg curl (3 × 12–15).

Why twice-per-week frequency matters

Frequency — how often you train each muscle group per week — is one of the more important variables in programming. Here is why training a muscle twice per week tends to outperform once per week at the same total volume:

• More practice. Motor patterns improve with repetition. Squatting twice a week lets you refine technique twice as often, which means heavier loads are achievable sooner and with better form.
• Shorter sessions. Instead of cramming 20 sets for quads into one brutal leg day, you can split them across two sessions. Quality of effort stays higher when sessions are not marathon events.
• Protein synthesis window. After a training session, muscle protein synthesis is elevated for roughly 24–48 hours. Hitting the muscle again at that point (or shortly after recovery) means more total time spent in a growth-favorable state over the course of a week.
• Better load management. Spreading volume across two sessions makes it easier to push each set hard without accumulated fatigue compromising the later sets.

Twice-per-week frequency is one reason training more than once per week per muscle group consistently outperforms once-per-week bro splits in practical outcomes for intermediate lifters.

Upper/lower vs push pull legs

Both are excellent intermediate splits. The differences are mostly logistical:

If you can reliably train 4 days a week and want to keep sessions under 75 minutes, upper/lower is a strong default. If you prefer shorter, more focused sessions and have 6 days available, push pull legs may suit you better. There is no meaningful muscle-building advantage to one over the other when total volume and effort are equal.

Making consistent progress

A well-structured split is a container for progress, not a guarantee of it. Three things determine whether upper/lower produces results over time:

• Progressive overload. Every few sessions, something should go up: a little more weight, an extra rep, or one more set. Use a training log so you can see whether you are actually moving forward.
• Adequate calories and protein. Check your intake with the TDEE calculator and aim for 0.7–1 g of protein per pound of bodyweight. Muscle cannot be built without the raw material. Use the macro calculator to dial in the split.
• Consistent sleep. Recovery happens away from the gym. Seven to nine hours of sleep is where muscle protein synthesis peaks. Chronic sleep debt makes progressive overload nearly impossible to sustain.

Run the same program for at least 8–12 weeks before evaluating whether it is working. Strength gains in the first two weeks are largely neural adaptations, not new muscle tissue. Real, visible change takes longer — give the split time before concluding it is or is not working.