Splitting upper and lower body means each session focuses on half the muscle groups, so you can do more sets for those muscles without a workout stretching past an hour.
Why it's different
Why 4 days opens up an upper/lower split
At 3 days, full-body is the better structure. At 4 days, there's enough room to split upper and lower body across separate sessions — which lets each get more focused volume without any single workout running too long.
2×/week each muscle group still gets trained twice, now with more total volume per session than a 3-day full-body plan
12–18 sets weekly per muscle group becomes realistic at this frequency — near the top of what most hypertrophy guidance recommends
50–65 min typical session length once volume increases to fill the extra training capacity 4 days provides
Unlike a 5-day body-part split that trains each muscle once a week, an upper/lower 4-day split still hits everything twice — frequency stays in the range that drives the best results.
If one session gets missed, an upper/lower structure makes it easy to shift the schedule without leaving a whole muscle group untouched for two straight weeks.
A 4-day split has room for one heavier, lower-rep day and one higher-rep, more volume-focused day for both upper and lower body — hard to fit into a 3-day full-body week.
What it looks like
A sample 4-day upper/lower week
Two upper body days and two lower body days, alternating a heavier strength focus with a higher-volume focus.
Example week
4 Days/week50–60 min Session lengthIntermediate LevelGym or full dumbbell set Equipment
Monday Upper (strength) Bench press 4×6 · Barbell row 4×6 · Overhead press 3×8 · Lat pulldown 3×10
Tuesday Lower (strength) Back squat 4×6 · Romanian deadlift 3×8 · Leg press 3×10 · Calf raise 3×15
Wednesday Rest Full rest or a light walk
Thursday Upper (volume) Incline dumbbell press 3×10 · Cable row 3×12 · Lateral raise 3×15 · Face pull 3×15
Friday Lower (volume) Leg extension 3×12 · Leg curl 3×12 · Walking lunge 3×10/side · Hip thrust 3×12
Saturday Optional light cardio 20–30 min easy cardio or an activity of choice
Sunday Rest Full rest
How Burnplate handles it
How Burnplate builds a 4-day plan
Burnplate's workout builder can structure a 4-day plan as an upper/lower split automatically, based on your days per week and level.
A plan structured for your exact frequency
Set 4 days a week in Burnplate's workout builder and it generates an upper/lower split scaled to your equipment and experience level.
Weight, set and rep logging across all four sessions
Track your strength-day and volume-day lifts separately, so both sides of the split show clear progress over time.
Calorie and protein targets that match the load
Four structured sessions a week is real training volume — your calorie and protein targets adjust accordingly to support recovery.
The burn bar across a heavier week
See how a strength day versus a volume day compares in the burn bar, a simple way to notice which sessions are working hardest for you.
Practical guidance
Tips for running a 4-day split well
How to get the extra volume a 4-day split allows without overreaching.
- 01 Keep one true rest day
A single full rest day mid-week (and ideally one at the end) is enough recovery for most people running an upper/lower 4-day split.
- 02 Don't run both hard days back-to-back
Spacing the two strength-focused sessions apart, rather than stacking them Monday/Tuesday, gives connective tissue more time to recover between heavy loads.
- 03 Let sleep and appetite guide extra volume
If recovery markers like sleep quality or appetite start slipping, hold volume steady for a week or two before adding more sets.
- 04 Prioritize compounds on strength days
Squats, presses, rows and hinges should anchor the heavier sessions; save isolation work for the volume-focused days.
- 05 Track weekly sets per muscle, not just per session
If a muscle group isn't progressing, the fix is often one or two more weekly sets for it, spread across the relevant upper or lower day.
- 06 Fuel around your two hardest days
Slightly higher carbs on strength-day mornings can support performance on your heaviest lifts of the week.
Build the plan around your week
Build my workout plan Tell Burnplate your days, equipment and level and it builds a progressive workout plan, logs every session, and connects what you burn to what you eat.
Questions
Workout planner for 4 days a week: FAQ
What is a good 4 day split workout routine?
An upper/lower split — two upper body days and two lower body days — is the most reliable 4 day split workout routine for most goals, since it keeps frequency at twice per muscle group weekly while allowing more volume per session than a 3-day full-body plan.
Is a 4 day workout plan better than 3 days?
Not universally better — a 4-day plan allows more weekly volume per muscle group, which can accelerate progress for intermediate lifters, but a well-built 3-day full-body plan is still very effective, especially for beginners or those with less recovery capacity.
Should I split 4 days by muscle group or upper/lower?
Upper/lower generally works better at 4 days because it keeps each muscle group's training frequency at twice a week. A body-part split (chest day, back day, etc.) usually needs 5–6 days to maintain that same frequency.
How do I structure a 4 day split for muscle gain?
Pair one heavier, lower-rep upper day with one higher-rep upper day, and do the same for lower body — two upper, two lower across the week. This balances strength work and the higher volume that drives muscle growth.
How much rest should be in a 4 day workout plan for 4 days a week?
One clear rest day mid-week and ideally one at the end of the week works well for most people, spacing the two harder (strength-focused) sessions apart rather than stacking them back-to-back.
Does Burnplate build a 4 day split workout routine automatically?
Yes — setting your training days to 4 in Burnplate's workout builder generates an upper/lower split scaled to your equipment and level, with strength- and volume-focused sessions built in.
