The Arnold Split: The Full 6-Day Programme (And Whether You Should Run It)
Arnold Schwarzenegger's chest/back, shoulders/arms, legs split explained: the complete six-day programme, the volume it demands, and an honest look at who it actually suits.
The Arnold split is the training structure Arnold Schwarzenegger used through his competitive peak. It pairs antagonist muscle groups (muscles that oppose each other) and runs a three-day rotation twice a week.
| Day | Session |
|---|---|
| Monday | Chest & Back |
| Tuesday | Shoulders & Arms |
| Wednesday | Legs |
| Thursday | Chest & Back |
| Friday | Shoulders & Arms |
| Saturday | Legs |
| Sunday | Rest |
The pairing logic is genuinely good. Chest and back oppose each other, so you can superset bench press with barbell rows, while your chest works, your back recovers, and vice versa. Sessions stay dense, and the pump is substantial.
Before you run it: the honest context
The original programme was performed by a man with exceptional genetics, using anabolic steroids, training as a full-time professional with no job and no commute.
That isn’t a reason to dismiss it. It is a reason to adjust it. The structure is sound; the volume as originally written is beyond what most natural lifters recover from. The version below is the split’s logic with the set count brought into a range a natural lifter can sustain.
If you want the historical programme in full, it’s widely published. What follows is the version worth actually running.
Day 1 & 4: Chest and Back
| Exercise | Sets | Reps | Rest |
|---|---|---|---|
| Barbell Bench Press | 4 | 6–8 | 2–3 min |
| Barbell Row | 4 | 8 | 2–3 min |
| Incline Dumbbell Press | 3 | 8–10 | 2 min |
| Pull Up | 3 | AMRAP | 2 min |
| Cable Flye | 3 | 12–15 | 60 s |
| Seated Cable Row | 3 | 12 | 90 s |
| Dumbbell Pullover | 3 | 12–15 | 60 s |
Superset the pairs: bench with rows, incline with pull-ups, flyes with cable rows. Rest the stated time after each pair, not each exercise.
On the second session of the week, swap the lead lifts (Incline Barbell Press and Lat Pulldown) and move the rep ranges up.
Day 2 & 5: Shoulders and Arms
| Exercise | Sets | Reps | Rest |
|---|---|---|---|
| Overhead Press | 4 | 6–8 | 2–3 min |
| Lateral Raise | 4 | 12–15 | 60 s |
| Rear Delt Flye | 3 | 15–20 | 45 s |
| Barbell Curl | 3 | 8–10 | 90 s |
| Overhead Triceps Extension | 3 | 10–12 | 90 s |
| Incline Dumbbell Curl | 3 | 12 | 60 s |
| Triceps Pushdown | 3 | 12–15 | 60 s |
| Hammer Curl | 3 | 12 | 45 s |
Superset biceps and triceps: curls with extensions. Antagonist pairing again, and it’s what makes this session as time-efficient as it is.
Day 3 & 6: Legs
| Exercise | Sets | Reps | Rest |
|---|---|---|---|
| Back Squat | 4 | 6–8 | 3 min |
| Romanian Deadlift | 3 | 8–10 | 2–3 min |
| Leg Press | 3 | 12 | 2 min |
| Leg Curl | 4 | 12–15 | 60 s |
| Leg Extension | 3 | 15 | 60 s |
| Bulgarian Split Squat | 3 | 10 each | 90 s |
| Calf Raise | 5 | 15–20 | 45 s |
Second leg session of the week leads with Front Squat instead, at higher reps.
What makes it work: antagonist supersets
This is the split’s real contribution, and it’s underrated.
When you superset opposing muscles, the resting muscle isn’t merely idle: there’s evidence that pre-activating the antagonist can slightly improve force production in the agonist. Practically, it means:
- Sessions finish faster at the same volume
- The pump is dramatically better
- You’re not standing around for three minutes between every set
The trade-off is that it’s metabolically demanding. Supersetting bench and rows will have you breathing hard in a way straight sets never do. That’s fine for hypertrophy work and counterproductive for maximal strength, which is why the heavy compound at the top of each session is better run as straight sets.
Who should run it
Good fit:
- Intermediate to advanced lifters with 2+ years of consistent training
- Anyone who can reliably train six days a week
- Lifters chasing size specifically, who enjoy high-volume sessions
- People who recover well: eight-plus hours of sleep, adequate food, low outside stress
Bad fit:
- Beginners. Six days of high-volume isolation work is a poor use of the phase when the main lifts respond fastest. Start with a 3-day full-body programme.
- Anyone with an unpredictable schedule. Six days means missing one breaks the rotation.
- Strength-focused lifters. The volume competes with the heavy work: upper/lower serves strength better.
- Anyone under-sleeping. Six sessions on six hours of sleep produces fatigue, not muscle.
Making it survivable
Cut sets before you cut sessions. If you’re not recovering, the answer is 3 sets instead of 4, not five days instead of six.
Deload every 6 weeks. Non-negotiable on a six-day programme. Same sessions, roughly 60% of your weights.
Leave 1–2 reps in reserve on compounds. The volume is the stimulus here; taking every heavy set to failure on top of it is how people end up injured.
Track your weekly sets. It’s easy to end up at 30 sets of chest a week on this split without noticing. Past about 20, you’re paying recovery for very little return.
Eat. Six training days demands a real surplus if growth is the goal. Running this split in a deficit is a fast route to burnout.
The verdict
The Arnold split is a legitimate programme with a genuinely clever organising idea: antagonist pairing is efficient and enjoyable. It also demands more recovery capacity than most people reading about it have available.
If you have six days, good sleep, a few years of training behind you and you want size: run it, with the volume above rather than the original. If any of those are missing, PPL delivers most of the benefit with a more forgiving structure.
ForgeFit’s superset support keeps antagonist pairs together in the logger so you’re not scrolling between two exercises mid-set, and the weekly volume tracking makes it obvious when a body part has crept past the point of useful returns.
Frequently asked questions
What is the Arnold split?
A six-day training split pairing antagonist muscle groups: chest and back on day one, shoulders and arms on day two, legs on day three, then the whole rotation repeated. Each muscle group is trained twice a week with very high volume per session.
Is the Arnold split good for natural lifters?
It can work, but the volume needs cutting. The original programme was run by a genetically exceptional lifter using anabolic steroids, training full time. Natural lifters generally need to reduce the set count by roughly a third and pay far closer attention to deloads.
How many days a week is the Arnold split?
Six, with one rest day. Some lifters run it as five days by dropping one session, but that breaks the twice-weekly rotation which is the point of the structure.
Why does the Arnold split pair chest and back?
They are antagonist muscle groups, so training them together allows supersets: a set of bench followed by a set of rows. The opposing muscle recovers while the other works, which keeps sessions dense and produces a substantial pump.
Is the Arnold split better than PPL?
They are similar in structure and frequency, both six days, both twice-weekly. PPL groups by movement pattern and keeps triceps with chest; the Arnold split pairs antagonists and gives arms their own dedicated session. PPL is generally the more recovery-friendly of the two.