4-Day Workout Split: Build Muscle with Upper/Lower Training

Four days per week is the sweet spot for most lifters—enough volume to build serious muscle, enough rest to actually recover.

This guide covers the most effective 4-day split options and how to implement them.

Why 4 Days Works

The Science

• Optimal frequency: Each muscle trained 2x per week
• Adequate volume: More sets per session than 3-day programs
• Recovery balance: 3 rest days allow full recuperation
• Progressive overload: Easier to increase weights consistently

The Lifestyle Fit

• Weekend freedom: Train Mon/Tue, rest Wed, train Thu/Fri
• Consistent schedule: Same days each week builds habit
• Sustainable: Not so demanding you'll burn out
• Effective: Enough stimulus for significant results

The Best 4-Day Split: Upper/Lower

The upper/lower split is the gold standard for 4-day training.

Why Upper/Lower Works Best

• Each muscle hit 2x per week (proven optimal for hypertrophy)
• Balanced workload across sessions
• Logical exercise groupings
• Allows heavy and light variations

The Complete Upper/Lower Program

Day 1: Upper Body A (Strength Focus)

| Exercise | Sets × Reps | Rest | |----------|-------------|------| | Barbell Bench Press | 4 × 5-6 | 3 min | | Barbell Row | 4 × 6-8 | 2-3 min | | Overhead Press | 3 × 6-8 | 2 min | | Lat Pulldown | 3 × 8-10 | 90s | | Dumbbell Curl | 2 × 10-12 | 60s | | Tricep Pushdown | 2 × 10-12 | 60s | | Face Pulls | 3 × 15 | 60s |

Day 2: Lower Body A (Strength Focus)

| Exercise | Sets × Reps | Rest | |----------|-------------|------| | Barbell Squat | 4 × 5-6 | 3 min | | Romanian Deadlift | 4 × 8-10 | 2-3 min | | Leg Press | 3 × 8-10 | 2 min | | Leg Curl | 3 × 10-12 | 90s | | Standing Calf Raise | 4 × 10-12 | 60s | | Plank | 3 × 45-60s | 60s |

Day 3: Rest

Day 4: Upper Body B (Hypertrophy Focus)

| Exercise | Sets × Reps | Rest | |----------|-------------|------| | Incline Dumbbell Press | 4 × 8-10 | 2 min | | Pull-Up or Lat Pulldown | 4 × 8-10 | 2 min | | Dumbbell Shoulder Press | 3 × 10-12 | 90s | | Seated Cable Row | 3 × 10-12 | 90s | | Incline Dumbbell Curl | 3 × 10-12 | 60s | | Overhead Tricep Extension | 3 × 10-12 | 60s | | Lateral Raises | 3 × 12-15 | 45s |

Day 5: Lower Body B (Hypertrophy Focus)

| Exercise | Sets × Reps | Rest | |----------|-------------|------| | Deadlift | 3 × 5-6 | 3 min | | Bulgarian Split Squat | 3 × 10 each | 90s | | Leg Press (feet high) | 3 × 12-15 | 90s | | Hip Thrust | 3 × 10-12 | 90s | | Seated Calf Raise | 4 × 12-15 | 60s | | Hanging Leg Raise | 3 × 12-15 | 60s |

Days 6-7: Rest

Alternative 4-Day Splits

Push/Pull/Legs/Upper (PPLU)

Good for those wanting extra upper body work:

| Day | Focus | |-----|-------| | Mon | Push (Chest, Shoulders, Triceps) | | Tue | Pull (Back, Biceps) | | Wed | Rest | | Thu | Legs | | Fri | Upper Body (Full) | | Sat-Sun | Rest |

Full Body 4x/Week

Hit everything every session, higher frequency per muscle:

| Day | Focus | |-----|-------| | Mon | Full Body A (Squat focus) | | Tue | Full Body B (Bench focus) | | Wed | Rest | | Thu | Full Body C (Deadlift focus) | | Fri | Full Body D (OHP focus) | | Sat-Sun | Rest |

Body Part Split

More traditional approach, higher volume per muscle:

| Day | Focus | |-----|-------| | Mon | Chest + Triceps | | Tue | Back + Biceps | | Wed | Rest | | Thu | Legs | | Fri | Shoulders + Arms | | Sat-Sun | Rest |

Progressive Overload Strategy

Weekly Progression

Option 1: Add Weight When you complete all sets and reps, add 5 lbs (upper) or 10 lbs (lower) next session.

Option 2: Add Reps If weight can't increase, add 1 rep per set until you reach the top of the rep range.

Option 3: Double Progression Work within a rep range (e.g., 8-12). Start at 8, add reps until you hit 12 across all sets, then add weight and drop back to 8.

Example Progression

Week 1: Bench Press 135 lbs × 8, 8, 8, 8 Week 2: Bench Press 135 lbs × 9, 9, 8, 8 Week 3: Bench Press 135 lbs × 10, 10, 9, 9 Week 4: Bench Press 135 lbs × 10, 10, 10, 10 Week 5: Bench Press 140 lbs × 8, 8, 8, 8

Sample Weekly Schedule

Standard Schedule

| Day | Activity | Time | |-----|----------|------| | Mon | Upper A | 60 min | | Tue | Lower A | 55 min | | Wed | Rest/Cardio | 30 min optional | | Thu | Upper B | 60 min | | Fri | Lower B | 55 min | | Sat | Active recovery | Variable | | Sun | Rest | - |

Alternative Schedule

| Day | Activity | |-----|----------| | Sun | Upper A | | Mon | Lower A | | Tue | Rest | | Wed | Rest | | Thu | Upper B | | Fri | Lower B | | Sat | Rest |

Volume Guidelines

Sets Per Muscle Per Week

| Muscle Group | Minimum | Optimal | Maximum | |--------------|---------|---------|---------| | Chest | 10 | 12-16 | 20 | | Back | 10 | 14-18 | 22 | | Shoulders | 8 | 10-14 | 18 | | Quads | 8 | 10-14 | 18 | | Hamstrings | 6 | 8-12 | 16 | | Biceps | 6 | 8-12 | 16 | | Triceps | 6 | 8-12 | 16 |

The upper/lower split naturally hits these ranges when following the program above.

Common 4-Day Split Mistakes

1. Making Days Too Long

Each session should be 45-75 minutes. Longer isn't better.

2. Unbalanced Push/Pull

Match pressing and pulling volume. Most people need more pulling.

3. Skipping Rest Days

The program is 4 days for a reason. Day 3 rest is critical.

4. No Deload

Every 4-6 weeks, reduce weight by 40-50% for a recovery week.

5. Changing Too Often

Stick with the program for 8-12 weeks minimum before changing.

Nutrition to Support 4-Day Training

Calories

• Muscle building: 300-500 above maintenance
• Fat loss: 300-500 below maintenance
• Recomposition: At maintenance, high protein

Protein

Target: 0.8-1g per pound bodyweight Distribution: 4-5 meals, 25-40g each

Pre-Workout (1-2 hours before)

Carbs + moderate protein, low fat Example: Rice + chicken, oatmeal + eggs

Post-Workout (within 2 hours)

Protein + carbs for recovery Example: Protein shake + banana, chicken + rice

Expected Results

Month 1

• Neurological adaptations
• Form improvements
• Some strength gains
• Learning the movements

Month 2-3

• Noticeable strength increases
• Muscle beginning to show
• Weight increases becoming regular
• Habit established

Month 4-6

• Significant muscle development
• Major strength gains
• Visible body composition changes
• Consistent progress

Year 1

• Transformation complete for beginners
• Substantial muscle gained (10-20+ lbs possible)
• Much stronger across all lifts
• Foundation for advanced training

Get Started

The 4-day upper/lower split is proven, effective, and sustainable.

Download this program. Start Monday. Track everything.

Four days a week. Real results. Let's go.

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