Best 4 Day Workout Split: 3 Options Compared

Upper/lower (upper, lower, upper, lower) is a practical 4-day default because it distributes most muscle groups across two weekly sessions. Below are three established 4-day workout split options, compared directly, so you can pick the one that fits your experience level and goals.

The Three Best 4 Day Splits Compared

Option 1: Upper/Lower Split (Best Overall)

Upper/lower alternates between full upper body and full lower body sessions, repeated twice across four days. It’s the most balanced option because every major muscle group gets two full training sessions a week without requiring 5-6 gym days.

Sample Upper A:

Pros: Balanced frequency, easy to program, works for all experience levels. Cons: Sessions run longer since they cover more muscle groups per workout.

See our full breakdown of the 4 day upper/lower workout plan for a complete week with sets and reps.

Option 2: Push/Pull/Legs+ (Best for PPL Fans)

This layout takes the push/pull/legs pattern and compresses it into four days by adding a repeat push or pull session instead of a second legs day.

Pros: Keeps PPL’s clean movement-pattern grouping. Cons: Legs only get one dedicated session a week unless you rotate which day repeats.

Option 3: Antagonist Pairs (Best for Time Efficiency)

Antagonist splits pair opposing muscle groups (chest/back, biceps/triceps) in the same session, often using supersets to cut rest time and shorten workouts.

Pros: Efficient sessions, less time in the gym per workout. Cons: Less even frequency across all muscle groups compared to upper/lower.

Which 4 Day Workout Split Should You Pick

For a deeper comparison of split styles beyond these three, read our full workout splits explained guide, or see our 4 day workout split for women if you want the same structure built around goals like toning and glute development.

If you are tempted to train one body part per day instead, read the 5 day bro split workout routine. A bro split concentrates far more work into each session but generally needs a fifth training day and enough experience to make that single weekly session productive.

Sample Week-by-Week Schedule

Whichever 4 day workout split you pick, run it across the week like this:

Non-consecutive training days are not required for any of these three splits, but spacing sessions like this keeps recovery consistent across the week.

Let the Plan Pick Your Split For You

Choosing between these three splits, and adjusting volume as you progress, is easier with a plan built around your specific goals. Your PT’s AI plan generator recommends the right 4-day split for your experience level and automatically adjusts sets and reps as you get stronger.

Four-Day Calibration and Overlap Audit

Write the days you can train for the next month and the maximum time available per session. Upper/lower is usually the simplest starting point because it distributes upper and lower work evenly. PPL+ works when movement-pattern focus is a strong preference, but decide in advance whether day four repeats push or pull and how legs will receive enough work. Antagonist pairing can save time with supersets, but it is less forgiving if both exercises are highly fatiguing.

At the end of each week, mark every hard press, pull, squat, hinge, and direct arm set on a calendar. If a heavy upper day follows a high-volume push day, or a hinge-heavy lower day follows a demanding posterior-chain session, reduce accessory work or move the session. This is a practical overlap check, not a diagnosis of overtraining. Keep one to three technically sound reps in reserve on most sets and adjust volume to performance and recovery.¹

If you miss day two, do day two next and slide the calendar forward. Do not combine two sessions or add all missed sets to the next workout. Retain the primary squat, hinge, press, and pull roles and drop the lowest-priority isolation work when the week is short. Log completed sets, rep quality, first repeated fault, and readiness. Add reps before load; after two or three stalled exposures, reduce load modestly or remove one set for a week. The 4 day upper/lower plan owns a fixed prescription, while this page owns cross-structure selection.