The One Arm Pull-up: A Complete Guide From First Rep to Advanced Variations
Also called Single Arm Pull-up, OAP
Quick Intro
The one arm pull-up is a Calisthenics exercise performed by hanging from an overhead bar with a single hand and pulling the entire bodyweight up until the chin clears the bar, with no assistance from the other arm at all.
Equipment Needed
A pull-up bar is the only equipment needed, positioned high enough to keep the feet off the ground for the entire rep.
Why the One Arm Pull-up Matters
Muscular strength is the main demand here, since lifting the full bodyweight through one arm alone demands close to the maximum pulling force a single side of the body can produce. Coordination, balance and power are all taxed too. Resisting rotation matters as much here as raw pulling force. With only one hand on the bar, the body constantly wants to twist toward the working side, and the obliques and deep core have to fight that rotation for the entire rep.
When to Do It
The one arm pull-up fits well early in an upper body pulling session, while the shoulders, grip and nervous system are fully fresh, since it demands close to maximum effort from a single side of the body. It isn’t the place to build pulling strength from scratch.
- Fewer than 5 to 8 clean reps of Archer Pull-up per side. A solid archer pull-up is a direct indicator that one side is close to ready for the full unilateral demand.
- Recent shoulder, elbow or wrist issue on either side. The working side bears the entire bodyweight with none of the support a two-arm pull normally provides. Checking with a physiotherapist beforehand is the wiser move.
For someone already comfortable with a strong Archer Pull-up, this is the natural final step in the unilateral pulling progression.
Getting Ready
A set of active hangs and a few archer pull-up reps beforehand confirm the shoulder and grip are ready for a fully unilateral pull. Resisting the strong rotational pull toward the working side by actively bracing the obliques and keeping the hips square is the key skill this exercise demands beyond raw strength.
Most lifters fail this rep not from a lack of pulling strength but from losing that anti-rotation control partway through.
Step-by-Step Instructions
1. Grip with one hand. Take an overhand grip on the bar with one hand, the other arm relaxed or lightly braced against the body.
2. Brace against rotation. Actively brace the core and obliques to keep the hips and shoulders square before pulling.
3. Pull to the top. Pull the body up in one continuous motion until the chin clears the bar, keeping the torso from twisting.
4. Lower with control. Lower back down to a full hang under control, resisting the urge to drop quickly.
How Many, How Often
| Level | Where you’re at | What to do |
|---|---|---|
| Beginner | 5 to 8 clean Archer Pull-up reps per side | 3 sets of 1 to 2 assisted or partial-range reps, resting 3 minutes between sets. |
| Intermediate | A single strict rep is possible with hard effort | 4 sets of 1 to 2 reps per side, resting 3 minutes between sets. |
| Advanced | 2 to 3 clean reps per side are possible with hard effort | Add weight through a dip belt, keeping the same strict, rotation-free form. |
Keeping the torso square and free of rotation matters more here than completing the rep at all, since a twisting, momentum-assisted pull trains a fundamentally different pattern than the strict version this guide covers.
Modifications and Variations
The one arm pull-up carries one easier variation, its own direct entry point into true unilateral pulling.
Easier: Archer Pull-up. Keeps the straight arm on the bar as a light stabilizer, sharing a small amount of the load instead of removing it entirely.
Progression path: Archer Pull-up → One Arm Pull-up.
Common Mistakes to Avoid
Letting the hips and shoulders twist toward the working side. Uncontrolled rotation takes tension away from the pulling muscles and turns the rep into a twisting motion rather than a straight vertical pull. Bracing the obliques and core throughout keeps the pull straight and reduces strain on the shoulder.
Using the free arm or body swing to assist the pull. Any help from the free arm or a swinging kip defeats the purpose of a true one-arm rep. Keeping the free arm relaxed or lightly braced, not actively pulling, keeps the rep a true one-arm pull.
Attempting full reps before the archer pull-up is strong. Jumping straight to a full one-arm pull before the archer version is solid on both sides raises injury risk for very little payoff. Building strength and control in the archer pull-up first makes this final step far more approachable.
After Your Set
A cross-body shoulder stretch, pulling one arm across the chest with the opposite hand, releases the shoulder that carried the entire pulling load. Hanging loosely from the bar for a few seconds afterward lets both shoulders settle evenly after a demanding unilateral set.
Going Deeper
The one arm pull-up is the point where the archer pull-up’s shared load finally becomes a fully single-sided effort. Reaching this level usually means the archer pull-up and the pull-up have both been built up over a long stretch of consistent training, along with general grip and shoulder strength.
One arm pull-up progress usually depends on rotational control, not raw pulling strength, once the archer pull-up is solid, so continuing to chase heavier weighted pull-ups alone stops moving the needle. The fix is dedicating specific practice to anti-rotation bracing, whether through slow archer pull-up holds or partial one-arm reps, rather than assuming more general pulling volume will eventually close the gap on its own.
A first strict rep typically takes six months to a year or more of consistent, focused practice for someone already strong on the archer pull-up, with side-to-side consistency often taking considerably longer to develop.
How to Know You’re Improving
Four checkpoints mark progress on the one arm pull-up:
- A partial or assisted rep that reaches roughly halfway up
- A single strict rep on the stronger side with no rotation
- A single strict rep on both sides
- 2 to 3 clean reps per side in the same session
A rep counts as clean when the torso stays square throughout and the chin clears the bar with no assistance from the free arm. Rep count only reflects progress when every rep in the set meets that standard.
Muscles Worked
- Latissimus Dorsi (the broad muscle of the mid and lower back, pulling the whole body up on one side alone)
- Biceps Brachii (the muscle at the front of the upper arm, flexing the single working elbow under full bodyweight)
- Teres Major (a small muscle under the shoulder blade, adding what it can to a pull that has no second arm)
- Forearm Flexors (the muscles of the inner forearm, holding a grip that carries everything through the whole rep)
- Obliques (the muscles along the sides of the abdomen, fighting the rotation that one-sided pulling creates)
- Transverse Abdominis (a deep core muscle that wraps around the torso like a corset, keeping the trunk from twisting away from the bar)
FAQ
How strong should my archer pull-up be before attempting this? 5 to 8 clean reps per side is a reasonable benchmark, since a solid archer pull-up is the clearest sign one side is close to ready for the full unilateral demand (see When to Do It above).
Why does my body twist so much during the rep? Pulling from a single hand naturally pulls the hips and shoulders toward that side, and resisting that rotation is a separate skill from raw pulling strength. Bracing the obliques and core specifically helps close that gap over time.
Should I train both sides equally? Yes. Training one side more than the other builds a strength and control imbalance, so matching practice across both sides keeps progress even.
Is a weighted pull-up or a one arm pull-up harder? They test different things. A weighted pull-up adds load to a two-arm base, while a one arm pull-up removes half the base entirely and adds an anti-rotation demand, so the two aren’t directly comparable.
Do I need any special equipment for this? No, just a pull-up bar. The main requirement is the strength and rotational control built up through the earlier steps in this progression.