Dumbbell Standing Single Arm Curl
A standing one-arm dumbbell curl — the simplest unilateral biceps builder in any arm program.
How to do it
- Stand tall with a dumbbell in one hand at your side and your other hand resting on your hip.
- Set your feet shoulder-width apart with soft knees and your core lightly braced.
- Start with the working arm fully extended, palm facing your thigh.
- Curl the dumbbell up toward your shoulder, rotating your palm up as your elbow bends.
- Squeeze the biceps hard at the top with your elbow tucked to your ribs.
- Lower the dumbbell slowly back to full extension, then repeat for reps before switching arms.
Key technique cue
Torso still, elbow at your ribs — don't swing the dumbbell with your back.
Common mistakes
- ✕ Swinging the torso back to throw the dumbbell up, which turns the curl into a body swing.
- ✕ Letting the elbow drift forward, which shortens the biceps stretch and cuts the movement short.
- ✕ Cutting the bottom of the range and not fully straightening the arm, which kills the stretched position.
- ✕ Rushing the lowering phase, where most of the muscle-building tension lives.
Benefits
- ✓ Builds biceps size one arm at a time.
- ✓ Fixes side-to-side imbalances in elbow flexion.
- ✓ Trains controlled curl mechanics with an isolated load.
Progression: from easier to harder
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Step 1 You are here - Step 2
About the exercise
The Dumbbell Standing Single Arm Curl is the most stripped-down biceps exercise in any program. Standing tall and curling one dumbbell at a time while rotating the palm up through the rep isolates each biceps on its own, so a weaker side cannot hide behind a stronger one. It is accessible to beginners and still useful in advanced arm specialization phases. It is a permanent fixture of any arm day or upper-body block. It is especially useful when you are just starting out, because the one-arm setup makes the technique easy to learn and easy to feel. Pair it with hammer curls and overhead extensions for complete arm training.
Updated
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