Upper Lower Split: The 4-Day Program for Muscle Growth

What Is Upper Lower?

The Upper Lower split divides training into two workout types:

• Upper Days: All upper body muscles—chest, back, shoulders, biceps, triceps
• Lower Days: All lower body muscles—quads, hamstrings, glutes, calves

Typically run 4 days per week, alternating between the two. Simple, effective, and time-efficient.

Why Upper Lower Works

1. A Practical Frequency in 4 Days

You hit each muscle twice per week—the same per-muscle frequency as a common 6-day PPL—in four sessions. A 2016 systematic review found better hypertrophy outcomes from twice-weekly than once-weekly training in the available volume-equated studies. It did not establish twice weekly as a universal optimum or determine whether three times per week is better. Use frequency to distribute an appropriate weekly workload across sessions you can recover from.

2. Better Recovery

With full 48-72 hours between hitting the same muscles, recovery is excellent. Upper and lower have minimal overlap.

3. Time Efficient

Same muscle frequency as PPL with 2 fewer days in the gym. Perfect for busy professionals or those who need more rest days.

4. Works Well for Strength + Hypertrophy

Start with heavy compounds, finish with accessories. The structure naturally accommodates both goals.

Schedule Options

Classic 4-Day (Most Popular)

Mon: Upper | Tue: Lower | Wed: Rest | Thu: Upper | Fri: Lower | Sat-Sun: Rest

Alternating Schedule

Train every other day: Upper → Rest → Lower → Rest → Upper → Rest → Lower

Slower rotation but more rest between sessions.

5-Day Frequency

U-L-U-L-U one week, L-U-L-U-L the next. More volume but higher fatigue.

Sample Workouts

Upper Lower vs Push Pull Legs

The common question: which is better?

Choose Upper Lower if:

• You can only train 4 days per week
• You prefer longer, fuller sessions
• You want more rest days
• You combine strength and hypertrophy goals

Choose PPL if:

• You can train 5-6 days consistently
• You prefer shorter, more focused sessions
• You want more volume per muscle per session
• You're primarily focused on hypertrophy

Both can distribute a similar weekly workload and per-muscle frequency. The practical difference is session length and weekly commitment.

Common Mistakes

• Neglecting arm isolation — Arms get worked but direct work helps
• Upper sessions too long — More muscle groups means manage volume carefully
• Inconsistent scheduling — The split works when you actually do 4 days
• Same workout twice — Use A/B variations for each day

Frequently Asked Questions

What is an upper lower split?

A training split that divides workouts into upper body days (chest, back, shoulders, arms) and lower body days (legs, glutes, calves). Usually run 4 days per week.

Is upper lower good for muscle growth?

It can be. Training each muscle twice per week gives many lifters a manageable way to distribute weekly volume across four sessions, but no single frequency is universally optimal.

Is upper lower better than PPL?

Neither is universally better. Upper Lower achieves the same frequency in fewer days. PPL allows more volume per session. Choose based on your schedule.

The Bottom Line

Upper Lower is a time-efficient way to distribute training across four days. If you cannot train five or six days per week, it can provide productive volume without requiring daily gym sessions.

Four focused sessions, each muscle twice per week, plenty of recovery. For busy lifters who still want results, it is a practical option—not a mandatory template.

Source

• Schoenfeld, Ogborn, and Krieger (2016): Effects of resistance training frequency on measures of muscle hypertrophy