The One Arm Push-up: A Complete Guide From First Rep to Advanced Variations
Also called Single Arm Push-up
Quick Intro
The one arm push-up is an advanced upper-body pushing exercise performed by lowering and pressing the body using a single arm, feet set wide for balance, the other arm resting lightly on the lower back or reaching forward.
Equipment Needed
Floor space is all it needs.
Why the One Arm Push-up Matters
The one arm push-up asks a single side of the chest (pectoralis major), triceps and front shoulder (deltoid anterior) to do what two arms normally share. Your obliques and deep core stabilizer (transverse abdominis) work overtime to stop the torso from twisting toward the working side as it lowers and presses.
That anti-rotation demand is what makes this exercise so much harder than it looks on paper. A standard push-up splits the load evenly and keeps the torso naturally square. Removing one arm means the whole body has to actively resist rotating toward the working side on every single rep, turning a pushing exercise into a full-body bracing exercise at the same time.
The one arm push-up is among the hardest bodyweight exercises, on a par with the Pistol Squat. It is a muscular strength exercise first, and driving the body up on one arm takes balance and coordination as well.
When to Do It
The one arm push-up belongs at the very start of an upper body pushing session, while the chest, shoulder and core are completely fresh. One to two sessions a week is plenty, since a movement this demanding needs real recovery time before the next attempt.
- Wrist or shoulder discomfort under full bodyweight load. A single arm supports the entire body here, which is a substantial jump in joint loading from a two-arm push-up. Building strength in the Archer Push-up first, without rushing the jump to one arm, protects both joints.
- Any existing rotator cuff issue. The anti-rotation demand this exercise places on the shoulder is considerable. Checking with a physiotherapist before attempting a full one arm push-up is the safer route.
Very few people arrive at this exercise as true beginners. It’s the top of a long progression, not a starting point.
Getting Ready
A thorough upper body warm-up matters a great deal here: a set or two of regular push-ups, several rounds of the Archer Push-up and some light shoulder circles all help prepare the joints and muscles for a maximal single-arm effort.
Actively brace the obliques on the working side to resist trunk rotation, rather than letting the hips and shoulders twist toward the working arm as fatigue sets in. A wide foot stance also gives a more stable base than feet together.
Step-by-Step Instructions
1. Starting position. Get into a push-up position balanced on one hand, feet set wide apart for stability, the free hand resting lightly on the lower back or reaching forward on the floor.
2. The descent. Lower the chest toward the floor under control, keeping the hips and shoulders square and resisting any rotation toward the working side.
3. The press. Push back up to the starting position through the working arm, driving through the whole hand and keeping the torso from twisting.
Repeat for the full set on one side, then switch, treating each side as its own separate training effort.
How Many, How Often
| Level | Where you’re at | What to do |
|---|---|---|
| Beginner | Working toward a first full rep | 3 sets of 1 to 3 reps per side, using a wider foot stance and a slightly elevated hand position if needed, focusing entirely on keeping the torso square. |
| Intermediate | 5 clean reps per side come easily | 3 to 4 sets of 5 reps per side, gradually narrowing the foot stance as control improves. |
| Advanced | 8 or more clean reps per side come easily | Slow the descent to a 3 to 4 second lower on every rep, since raw rep count stops adding much new strength at this level. |
Letting the torso rotate toward the working arm is the easiest way to grind out an extra rep while quietly turning the exercise from a strict press into a twisting half-rep, so a square torso matters more here than the number on the counter.
Modifications and Variations
The one arm push-up connects to a clear easier step, and it sits at the very top of the bodyweight pushing progression.
The Archer Push-up keeps both hands on the floor but shifts nearly all the load to one arm at a time, building the same single-arm strength with a second point of contact still helping with balance.
Progression path: Push-up → Diamond Push-up → Archer Push-up → One Arm Push-up
There isn’t a meaningfully harder bodyweight pushing progression beyond this one. From here, added external load is the realistic way to keep building pressing strength further.
Common Mistakes to Avoid
Letting the torso rotate toward the working arm. This is the fault that defeats the exercise’s purpose, since the whole point is pressing in a straight line, not twisting into an easier half-rep. Actively bracing the obliques on the working side keeps the rep honest.
Setting the feet too close together. A narrow stance removes a useful source of stability before it’s earned. Starting with a wide stance and narrowing it gradually as control improves keeps the rep achievable without cheating the form.
Rushing the jump from the Archer Push-up. Attempting a full one arm rep before the Archer Push-up feels strong on both sides skips a strength requirement, not just a confidence one. Building one-arm-dominant strength first makes the eventual jump much smaller.
Flaring the working elbow out wide. A wide elbow angle increases shoulder joint stress without adding pressing strength. Keeping the elbow tracking back at a moderate angle, similar to a standard push-up, protects the shoulder through the heaviest part of the rep.
After Your Set
Pressing the full bodyweight through one arm leaves the chest, shoulder and triceps on that side doing noticeably more work than a two-arm push-up ever asks of them. An overhead triceps stretch on the working arm, elbow bent and pulled gently behind the head, releases the muscle that just handled a full press alone. A few slow trunk rotations from a seated position help settle the obliques after resisting rotation for the whole set.
Going Deeper
The one arm push-up sits at the top of the bodyweight pushing ladder in this guide, the natural end point after the Push-up, Diamond Push-up and Archer Push-up have each been mastered in turn. Most people spend far longer on the Archer Push-up step than any other, since that’s where the single-arm strength gets built.
Progress on the one arm push-up tends to stall for one specific reason: attempting the full single-arm version before the Archer Push-up is strong on both sides, which caps the total strength available no matter how much the one arm version itself gets practiced. The fix is returning to the Archer Push-up and building it to real strength on both sides first, rather than grinding low-quality attempts at the harder version.
Someone with a strong Archer Push-up already can expect a single controlled rep per side within the first four to eight weeks, and five clean reps per side somewhere in the four to six month range, given how much total strength this movement requires.
How to Know You’re Improving
Four checkpoints mark real progress on the one arm push-up:
- A single controlled rep per side with the torso staying square
- Three clean reps per side in a row
- Five clean reps per side with a narrow foot stance
- A 3 second controlled descent on every rep of a full set
A rep counts as clean when the torso never rotates toward the working arm, the chest reaches full depth and the press finishes with the arm fully extended. A square torso through the whole rep, not the width of the foot stance, is what actually separates a real one arm push-up from a twisting half-rep.
Muscles Worked
- Pectoralis Major (the chest muscle, pressing the whole body up on one arm)
- Triceps Brachii (the back of the upper arm, extending the single supporting elbow)
- Anterior Deltoid (the front of the shoulder cap, carrying a shoulder load normally split between two arms)
- Obliques (the muscles along the sides of the waist, resisting the rotation one-sided pressing creates)
- Transverse Abdominis (a deep core muscle that wraps around the torso like a corset, holding the trunk rigid so force is not lost in a twist)
FAQ
How long does it take to get a one arm push-up? For someone with a strong Archer Push-up already, four to eight weeks for a first single rep and four to six months for five clean reps per side, though the real timeline depends heavily on existing pressing strength.
Why does my hip twist during a one arm push-up? This usually means the obliques aren’t yet bracing hard enough to resist the natural pull toward the working arm. A wider foot stance and slower tempo both help while that strength builds.
Do I need to master the Archer Push-up first? Yes, in practical terms. The Archer Push-up builds the specific single-arm-dominant strength this exercise requires, and skipping it usually just means more failed attempts at the harder version.
Is the one arm push-up worth the effort if I can already do regular push-ups well? For raw pressing strength and a genuine benchmark of unilateral upper body power, yes. It isn’t necessary for general fitness, since a well-executed two-arm push-up already trains the same muscles effectively for most goals.
Next in this series: the Archer Push-up, the direct stepping stone this exercise builds on.