Intermediate · 4 days · Strength and size

Upper/lower, four days, everything twice.

Level
Intermediate
Days a week
4 days
Goal
Strength and size
Equipment
Full gym
How long
8–12 week blocks
Created by
Splyt

This is Splyt’s four-day upper/lower program. Each half of the body gets a heavier day built around the main barbell lifts and a lighter day with more reps and variety. It is the most balanced default for lifters who can train four days a week.

This program is Splyt’s own. Use it, share it and adapt it as you like.

Who it’s for

Lifters six months or more into training who want to keep progressing on strength while building size, with four days available.

It also works for people coming off a beginner full-body program: the main lifts stay, the sessions get a little more focused, and each one is short enough to fit before or after work.

If your goal is mostly strength, keep the heavy days as written and trim the volume days. If it is mostly size, add a set to the volume-day exercises once you have run it for a few weeks.

The weekly schedule

Heavy days early in the week
DaySession
MondayUpper A (heavy)
TuesdayLower A (heavy)
WednesdayRest
ThursdayUpper B (volume)
FridayLower B (volume)

Every workout

Upper A
ExerciseSets × repsNotes
Barbell bench press4 × 5
Barbell row4 × 6–8
Overhead press3 × 6–8
Lat pulldown3 × 8–10
Dumbbell curl2 × 10–12
Skull crusher2 × 10–12
Lower A
ExerciseSets × repsNotes
Back squat4 × 5
Romanian deadlift3 × 6–8
Leg press3 × 10
Leg curl3 × 10–12
Calf raise4 × 10–12
Upper B
ExerciseSets × repsNotes
Incline dumbbell press4 × 8–12
Pull-up4 × 6–10
Seated dumbbell shoulder press3 × 10–12
Seated cable row3 × 10–12
Dumbbell lateral raise3 × 15
Triceps rope pushdown3 × 12
Lower B
ExerciseSets × repsNotes
Deadlift3 × 5
Front squat3 × 8
Walking lunge3 × 10 each leg
Leg extension3 × 12–15
Seated calf raise4 × 12–15

Rest 2–3 minutes on the first two exercises of each day and 60–90 seconds on the rest.

Each session takes about an hour. The heavy days start with a barbell lift for sets of five; the volume days use more dumbbells and cables in the 8–15 rep range.

How to progress

Heavy days: add weight when you hit every rep, 5 lb on upper lifts and 5–10 lb on lower. Volume days: double progression.

Use the heavy days to track your strength. A lift that goes up 5 lb every week or two is on track; when that stops, move it to sets of three for a block or swap the variation.

Stalls and deloads

A lighter week every six to eight weeks, or when two or more lifts stall.

How long to run it

Eight to twelve weeks per block, then change accessories or rep ranges and run it again.

Most people run it for a long time with small changes: swapping incline dumbbells for incline barbell, front squats for hack squats, and so on, while keeping the four-day rhythm.

What to do next

PHUL is a close relative. Move to a 5- or 6-day split for more volume.

Common mistakes

Equal effort every day

Heavy days are heavy; volume days are about reps and pump. Keep the distinction.

Making every upper day a chest day

Match pressing with pulling on both upper days. Rows and pull-ups keep shoulders healthy and the back growing.

Running it in Splyt

Build each workout above as a template in Splyt. When you finish a session, the weights you actually lifted carry into the next run of that template, so every set shows last time’s numbers beside it and you can see at a glance whether to add weight. Log on iPhone or Apple Watch, and the Watch counts your reps for you.

Have the program in a spreadsheet or screenshot already? Import it and Splyt turns it into editable templates. Use the one-rep max calculator to set a training max, the warm-up calculator for warm-up sets in whole plates, and strength standards to see where your lifts sit for your bodyweight.

Questions

Is a 4-day upper lower split good?

It is one of the best options for most people who can train four days: everything twice a week, short sessions, plenty of rest.

Can beginners do a 4-day upper lower split?

Yes, once they know the main lifts. Complete beginners usually progress faster on three full-body days at first.

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More for your training

Run this program in Splyt, the workout tracker for iPhone and Apple Watch that remembers what you lifted. Get Splyt free on the App Store