The Upper/Lower Split: Complete 4-Day Guide

If you want a simple schedule that builds real muscle without living at the gym, the upper/lower split is hard to beat. It alternates upper-body days with lower-body days, and in its classic four-day form hits every major muscle group twice a week. That frequency is exactly what the research favors, as we covered in our breakdown of training muscle groups twice a week and the science behind it. Below is the complete guide: the workouts, exercise swaps, progression, and 2- to 5-day variants.

What Is the Upper/Lower Split?

An upper/lower split alternates one session for your upper body (chest, back, shoulders, arms) with one session for your lower body (quads, hamstrings, glutes, calves). Unlike a body-part split that trains chest on Monday and back on Tuesday, every workout here is a full half of your body. It also differs from a push/pull/legs routine, which splits by movement direction rather than body half; upper/lower needs just two session templates and gives the bench and squat more weekly practice.

The appeal is twofold:

• Frequency without fatigue. Each muscle gets hit twice weekly, supporting both strength and size, while each session stays manageable.
• Four days, full coverage. You get compound movements, enough volume, and still have three recovery days.

The classic schedule runs Upper A, Lower A, Upper B, Lower B, with slightly different “A” and “B” sessions.

Why the Upper/Lower Split Works: The Training Science

The twice-per-week frequency is not tradition, it is the evidence-backed sweet spot. A systematic review and meta-analysis found that with weekly volume equated, training a muscle twice a week produced significantly better hypertrophy than once a week; the authors concluded that major muscle groups should be trained at least twice weekly to maximize growth.¹

Two more findings shape the programming:

• Volume drives growth. Weekly sets and muscle mass show a dose-response relationship in the research, so the split’s real job is giving each muscle enough sets per week (roughly 10 to 20) without any single session becoming brutal.²
• Rep ranges are flexible. Hypertrophy happens across a wide loading spectrum, not just a magic 8-to-12 zone,³ which is why the heavy A days and volume B days both work.

The Classic 4-Day Upper/Lower Schedule

The classic pattern, also the heart of our best 4-day gym workout routine, looks like this:

If your week doesn’t line up Monday through Friday, run the pattern in any four-day block; the alternating order matters, not the calendar.

Upper A (Strength)

Lower A (Strength)

Upper B (Hypertrophy)

Lower B (Hypertrophy)

Aim for one to two reps in reserve on strength days and push closer to failure on hypertrophy days; training to failure is not required, more below.

Exercise Selection: Swap by Equipment and Preference

The tables above are a template, not a mandate: pick one option per pattern per session and rotate between A and B days.

Upper Day Movement Patterns

Lower Day Movement Patterns

Keep at least one heavy barbell pattern per session when you can, prefer versions you can progress in small increments, and swap anything that hurts in a joint for option B or C. At home with only dumbbells: dumbbell bench, one-arm row, dumbbell shoulder press, goblet squat, dumbbell RDL, and lunges cover every pattern.

The 2-Day Upper/Lower Variant

Not everyone has four training days, and that’s fine. The simplest version is one Upper and one Lower day per week, spaced a few days apart:

Two sessions a week matches the WHO minimum recommendation for muscle-strengthening activity,⁴ and suits beginners and maintenance phases; keep each session to 6 to 8 exercises at 2 to 3 sets per lift. See our best 2-day gym workout routine for a full plan, and our guide on how many days a week you should work out for the bigger frequency picture.

The 3-Day Upper/Lower Variant

Three days is the most flexible compromise; our best 3-day gym workout routine lays out the options. Popular setups:

• Upper, Lower, Upper: more arm and chest practice, less leg frequency.
• Upper, Lower, Full Body: a mixed session tops up coverage.

The 5-Day Upper/Lower Variant

Want more frequency? Add a fifth session as a second Lower or Upper day:

Lower C typically leads with a hinge (RDL or trap-bar deadlift) plus glute and calf volume, since squats already had two sessions. Upper C is a good home for extra shoulder and arm work, the muscles that recover fastest. The catch is fatigue: sessions under an hour, weekly sets per muscle in the ranges research links to growth,² and a serious deload. See the best 5-day gym workout routine and best 6-day gym workout routine for how those schedules handle volume and recovery.

How to Progress: Weight, Reps, and Rest

The split only works if the load on the bar goes up over time. Progressive overload is the main driver of both strength and size; here is how to structure it.

Double Progression

The simplest scheme for the rep ranges above. Pick a weight you can lift for the bottom of the rep range, then:

1. Add reps set by set until you hit the top of the range.
2. Add weight, dropping back to the bottom of the range.
3. Repeat.

Example: 3 sets of 8-10 on the incline dumbbell press, starting at 24 kg for 8, 8, 8; push to 9s and 10s over the next weeks, then 8s with 26 kg, and repeat. Every session has one target: beat last week’s logbook entry.

Adding Weight and Reps

Use small, honest jumps: 2.5 to 5 lb (1 to 2.5 kg) on upper-body lifts, 5 to 10 lb (2.5 to 5 kg) on lower-body lifts. If you cannot hit the bottom of the rep range with the new weight, you added too much; drop back and add reps first. On isolation moves, adding a rep or two beats adding plates.

Rest Periods

Rest is a training variable, not wasted time. On heavy compounds (squat, bench, deadlift), take 2 to 3 minutes between sets; research shows rests over 2 minutes maximize strength gains in trained lifters, largely because set quality stays higher.⁵ Beginners do fine with 60 to 120 seconds, and isolation work needs only 60 to 90.⁵ Do not cut rests so short that weights drop from set to set.

How Hard Should Each Set Be?

Leave a rep or two in reserve on strength days and come within a rep or two of failure on hypertrophy sets. Failure is not required: a meta-analysis found no overall strength or size difference between training to failure and stopping short, with a small hypertrophy edge for failure only in already-trained lifters.⁶ Going to failure on every set of a 5-day split will bury you in fatigue, so reserve it for the last set of an isolation exercise. Our guide on the science of tracking for progressive overload explains why the logbook matters.

Who Should Use the Upper/Lower Split?

The upper/lower split suits most lifters and shines for three groups: busy intermediates, since four focused days beat scattered sessions; anyone chasing strength and size together, because twice-weekly frequency means frequent compound practice; and lifters coming from once-a-week bro-splits.

It’s less ideal if you can only train two days and want maximum per-muscle hypertrophy, where a full-body approach often wins, or if one weak point needs heavy isolation work.

Common Mistakes and How to Fix Them

• Running Upper B identical to Upper A. Keep the A/B differences, or swap exercise alternatives between sessions.
• Cramming in extra exercises. Four quality lifts per muscle beat eight mediocre ones; past 75 minutes, trim isolation work.
• Skipping the deload. After six to eight heavy weeks, take a lighter week; our guide on when and how to take a deload week explains the timing.
• Not tracking. The split only works if the numbers move over time; log every set. Workout Quest’s built-in tracker makes this easy.
• Adding weight before you earn it. Jumping 10 lb on the bench and watching reps fall from 10 to 3 is not progress; use double progression instead.
• Treating rest as wasted time. Sixty seconds between heavy squat sets quietly shaves reps off every set; give compounds 2 to 3 minutes.

Upper/Lower Split FAQs

How many days a week should I train upper/lower?

Four days is the classic answer: Upper A, Lower A, Upper B, Lower B. Two days suits beginners and maintenance, three is a compromise, five to six is for experienced lifters who manage fatigue. Our guide on how many days a week to work out walks through the trade-offs.

Is the upper/lower split better than push/pull/legs?

Neither is strictly better for most lifters; both build muscle with the right volume and progression. Upper/lower gives your biggest lifts more weekly practice with simpler scheduling; PPL splits volume across three sessions, which some prefer for recovery. Compare them in our push/pull/legs routine guide.

How long should an upper/lower workout take?

Plan for 45 to 75 minutes. Strength days with 2 to 3 minute compound rests run closer to 75; hypertrophy days with shorter rests can finish around 45. Consistently over 75 minutes? Cut isolation sets, not compounds.

Can I do an upper/lower split with only dumbbells?

Yes. Dumbbell bench, one-arm row, dumbbell shoulder press, goblet squat, dumbbell RDL, and lunges cover every pattern. Progress in small increments, like 1 kg jumps with adjustable dumbbells, and you keep the twice-a-week frequency benefit.

Conclusion

The upper/lower split is one of the most efficient ways to organize training: simple on paper, demanding in practice, and backed by solid frequency science. Start with the four-day classic, scale down to two or three days when life gets busy, push to five when you want more frequency, and keep the A/B variation honest. Track every set so your next session always has a target, and remember the best split is the one you can run consistently for months.

Ready to put the plan into action? Get Workout Quest on the App Store or Google Play, or learn more at workoutquestapp.com.

References:

Footnotes

1. Schoenfeld, B. J., Ogborn, D., & Krieger, J. W. (2016). “Effects of Resistance Training Frequency on Measures of Muscle Hypertrophy: A Systematic Review and Meta-Analysis.” Sports Medicine. https://link.springer.com/article/10.1007/s40279-016-0543-8 ↩

2. Schoenfeld, B. J., Ogborn, D., & Krieger, J. W. (2017). “Dose-response relationship between weekly resistance training volume and increases in muscle mass: A systematic review and meta-analysis.” Journal of Sports Sciences. https://www.tandfonline.com/doi/full/10.1080/02640414.2016.1210197 ↩ ↩²

3. Schoenfeld, B. J., Grgic, J., Van Every, D. W., & Plotkin, D. L. (2021). “Loading Recommendations for Muscle Strength, Hypertrophy, and Local Endurance: A Re-Examination of the Repetition Continuum.” Sports. https://pmc.ncbi.nlm.nih.gov/articles/PMC7927075/ ↩

4. World Health Organization (2020). “WHO guidelines on physical activity and sedentary behaviour.” https://www.who.int/publications/i/item/9789240015128 ↩

5. Grgic, J., Schoenfeld, B. J., Skrepnik, M., Skrepnik, M., & Mikulic, P. (2018). “Effects of Rest Interval Duration in Resistance Training on Measures of Muscular Strength: A Systematic Review.” Sports Medicine. https://link.springer.com/article/10.1007/s40279-017-0788-x ↩ ↩²

6. Grgic, J., Schoenfeld, B. J., Orazem, J., & Sabol, F. (2022). “Effects of resistance training performed to repetition failure or non-failure on muscular strength and hypertrophy: A systematic review and meta-analysis.” Journal of Sport and Health Science. https://pmc.ncbi.nlm.nih.gov/articles/PMC9068575/ ↩