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Intermediate+ · Build & Optimize

Intermediate 4-Day Split (Upper / Lower)

Once full-body training stops delivering, it's time to train harder in a smaller space. This four-day upper/lower split adds volume, variety, and heavier work — the classic next step for building muscle and strength.

By Steve Main · Vitality and Wellness

This is the "Build & Optimize" plan from our Programs section — the natural graduation from our beginner full-body routine. Splitting your week into four sessions lets you train each muscle group with more sets and heavier loads while still hitting everything twice a week — the sweet spot for continued muscle and strength gains. You lift four days, rest three, and rotate two upper days and two lower days.

How This Program Works
  • Split: Upper / Lower, four days a week — each muscle group trained twice weekly.
  • Two styles: one heavier "strength" day and one higher-rep "hypertrophy" day for each upper and lower.
  • Prerequisite: you can already perform the main lifts with solid form and have a few months of consistent training behind you.
  • Progress with double progression — add reps, then weight — and deload every 6–8 weeks.

The weekly schedule

Four lifting days with rest built in for recovery. A common layout:

You can shift the days to fit your week — just keep at least one rest day between the two upper days and between the two lower days.

Warm up before every session (10 minutes)

Day 1 — Upper A (Strength)

Heavier · Lower Reps

Upper Body — Strength

Focus on the first two lifts. Longer rest on the heavy compounds.

ExerciseSets × RepsRest
Barbell Bench Press ▶ Demo Swap: dumbbell bench or chest-press machine4 × 5–82–3 min
Dumbbell Row ▶ Demo Swap: barbell row or chest-supported row4 × 6–82 min
Overhead Dumbbell Press ▶ Demo Swap: barbell overhead press or machine shoulder press3 × 6–82 min
Weighted Pull-Up or Lat Pulldown ▶ Demo Swap: assisted pull-up3 × 8–1090 sec
Incline Dumbbell Press ▶ Demo Swap: incline machine press3 × 8–1090 sec
Dumbbell Lateral Raise ▶ Demo Swap: rear-delt fly or face pull3 × 12–1560 sec

Day 2 — Lower A (Squat Focus)

Squat Emphasis

Lower Body — Squat Focus

The back squat leads; everything else supports it.

ExerciseSets × RepsRest
Barbell Back Squat ▶ Demo Swap: hack squat or goblet squat4 × 5–82–3 min
Romanian Deadlift ▶ Demo Swap: seated leg curl3 × 8–102 min
Leg Press ▶ Demo Swap: walking lunges3 × 10–1290 sec
Lying Leg Curl ▶ Demo Swap: seated leg curl3 × 10–1290 sec
Standing Calf Raise ▶ Demo Swap: leg-press calf raise4 × 10–1560 sec
Hanging Leg Raise ▶ Demo Swap: cable crunch or plank3 × 10–1560 sec

Day 3 — Upper B (Hypertrophy)

Higher Reps · More Volume

Upper Body — Hypertrophy

Lighter than Upper A, more reps, shorter rest. Chase a good pump and clean form.

ExerciseSets × RepsRest
Incline Barbell or Dumbbell Press ▶ Demo Swap: incline machine press4 × 8–1090 sec
Seated Cable Row ▶ Demo Swap: chest-supported machine row4 × 10–1290 sec
Dumbbell Shoulder Press ▶ Demo Swap: machine shoulder press3 × 10–1290 sec
Wide-Grip Lat Pulldown ▶ Demo Swap: pull-up3 × 10–1290 sec
Cable Fly or Pec Deck ▶ Demo Swap: dumbbell fly3 × 12–1560 sec
Lateral Raise ▶ Demo Swap: cable lateral raise3 × 12–1560 sec
Biceps Curl + Triceps Pushdown ▶ Curl ▶ Pushdown Superset the two3 × 10–1260 sec

Day 4 — Lower B (Deadlift / Posterior Focus)

Hinge Emphasis

Lower Body — Deadlift Focus

The deadlift leads; then single-leg and hamstring work.

ExerciseSets × RepsRest
Deadlift (conventional or trap-bar) ▶ Demo Swap: rack pull or hip-thrust machine4 × 5–62–3 min
Dumbbell Walking Lunge ▶ Demo Swap: Bulgarian split squat or reverse lunge3 × 8–10/leg90 sec
Leg Extension ▶ Demo Swap: goblet squat3 × 12–1575 sec
Lying Leg Curl ▶ Demo Swap: seated leg curl or Nordic curl3 × 10–1275 sec
Seated Calf Raise ▶ Demo Swap: standing calf raise3 × 12–1560 sec
Pallof Press or Cable Crunch ▶ Demo Swap: hanging leg raise3 × 10–1260 sec

How the split is built

This isn't a random collection of exercises — it's engineered so nothing gets overtrained and nothing gets neglected:

Progression: double progression

The simplest reliable method at this stage is double progression — you add reps first, then weight.

Effort matters more now. Take your working sets close to failure — roughly 1–3 reps in reserve — because that's the stimulus that keeps driving growth once the easy beginner gains are behind you.
Deload Every 6–8 Weeks Training hard four days a week accumulates fatigue. Every 6–8 weeks, take a lighter "deload" week — cut your working weights by roughly 40–50% or halve your sets — to let joints, connective tissue, and your nervous system recover. You'll come back stronger, not weaker. Deloading on purpose beats being forced to by a nagging injury.
Train Smart This program assumes you already move well on the barbell lifts — if the squat, bench, deadlift, overhead press, or row still feel shaky, spend more time on the beginner program first, or get a coach to check your technique. Warm up thoroughly before heavy work, use a spotter or safety pins on the bench and squat, and never sacrifice form to add weight. Sharp or joint pain (as opposed to muscle fatigue) means stop and reassess. Sleep and nutrition — especially adequate protein — carry more of the load at this stage than any single set does.

Nutrition & recovery drive the results

At the intermediate level, the workout is only the trigger — the growth happens between sessions. To build muscle, eat enough total calories and prioritize protein (roughly 0.7–1 gram per pound of bodyweight daily). Training in a deficit to lean out works too, but expect slower strength gains and hold protein high to protect muscle. Sleep 7–9 hours; it's the most underrated performance enhancer there is.

Quick Reference

  • Split: Upper A · Lower A · rest · Upper B · Lower B · rest · rest.
  • Strength days: heavier, 5–8 reps, 2–3 min rest on compounds.
  • Hypertrophy days: 8–15 reps, 60–90 sec rest, more volume.
  • Progress: double progression (reps then weight), 1–3 reps in reserve; deload every 6–8 weeks.

Keep building

Master this split, dial in your nutrition, and the gains keep coming. New training and body-composition breakdowns drop on the channel every week.