4-Day Split Workout Programs

A split means training different muscle groups on different days. Four workouts a week let you give each group more volume while still recovering for the next session. This format suits people who have been training for at least a few months.

How to choose

  • Each muscle twice a week — the 4-day upper/lower split: two upper-body and two lower-body workouts.
  • Mass, classic split — the intermediate mass-building program: back + biceps, chest + triceps, legs, shoulders + abs.
  • Definition — the Gym Cutting Program for Men: 12–15 reps and short rests.
  • For women — the intermediate gym program for women: legs and glutes twice a week.
  • Can only train 3 times — 3-Day Split: Barbell, Machines & Pull-up Bar.

How to arrange the days

A handy layout is Mon/Tue/Thu/Fri: two days on, a rest day, two more and the weekend off. Mon/Wed/Fri/Sat also works — just avoid three workouts in a row.

How to progress

The programs use double progression: reps go up first, then the working weight. Keep records — when all sets reach the top of the rep range, add 2.5–5 kg on compound lifts. If fatigue builds up, take a week with weights 10–20% lighter and carry on.

5 plans in this collection

Frequently asked questions

Is a 4-day split suitable for beginners?

It's better to start with 2–3 full-body workouts. Move to a 4-day split after a few months of regular training.

Which is better: upper/lower or a classic body-part split?

Upper/lower trains each muscle twice a week; a classic split trains it once with more volume. Both work — pick the one you can stick with.

What if I can only do 3 workouts some week?

Do the workouts in order and continue with the next one the following week — don't skip them or do two in one day.

How long is a split workout?

Usually 50–70 minutes: 5–6 exercises of 3–4 sets plus a warm-up.

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4-Day Split Workout Programs | Workouter