Dumbbell Standing Single Arm Hammer Curl
- Beginner
- Dumbbell
The dumbbell standing single arm hammer curl is a curl variation done with a neutral grip — palms facing in toward the body — instead of the standard supinated grip. That hand position shifts the work onto the brachialis (the muscle underneath the biceps) and the brachioradialis in the forearm, which is what gives the upper arm a thicker, more three-dimensional look.
How to do the Dumbbell Standing Single Arm Hammer Curl
- Stand tall with a dumbbell in one hand at your side and the other hand resting on your hip.
- Set your feet shoulder-width apart with knees soft and core lightly braced.
- Start with the working arm fully extended and palm facing your thigh.
- Curl the dumbbell up toward your shoulder while keeping the palm facing in throughout the rep.
- Squeeze the biceps and brachialis hard at the top with the elbow tucked beside your ribs.
- Lower the dumbbell slowly back down to full extension, then repeat for reps before switching arms.
Muscles worked
- Primary:
- Biceps
Why train it
- Builds the brachialis underneath the biceps for thicker arms.
- Strengthens the forearm and improves grip endurance.
- Adds variety to curl programming with neutral-grip loading.
Common mistakes
- Rotating the wrist into a regular curl partway up, which turns the hammer into a standard biceps curl.
- Swinging the torso to throw the dumbbell up, which removes the work from the biceps and forearm.
- Letting the elbow drift forward, which shortens the range and reduces brachialis loading.
- Cutting the lowering phase short, which skips most of the muscle-building tension.
Frequently asked questions
What muscles does the Dumbbell Standing Single Arm Hammer Curl work?
The Dumbbell Standing Single Arm Hammer Curl trains the biceps, and little else. No other group takes a meaningful share of the load, which is what makes this a clean way to target the biceps directly.
What equipment do I need for the Dumbbell Standing Single Arm Hammer Curl?
Only a dumbbell. Nothing beyond that is required to run the movement the way it is described above.
Is the Dumbbell Standing Single Arm Hammer Curl suitable for beginners?
Yes. The Dumbbell Standing Single Arm Hammer Curl is rated beginner: the pattern is quick to pick up and forgiving when a rep drifts. Start light and add weight once the form repeats itself without you thinking about it.
Can I do the Dumbbell Standing Single Arm Hammer Curl at home?
Yes, if you own a dumbbell. That is the whole requirement, and it is the reason this one travels well between a home setup and a gym floor.
How many sets and reps of the Dumbbell Standing Single Arm Hammer Curl should I do?
Three to four sets of 10 to 15 reps. Isolation work responds to reps and a controlled tempo rather than load, so stop each set a rep or two short of failure and keep the weight honest.
What are good alternatives to the Dumbbell Standing Single Arm Hammer Curl?
Cable Bar Curl, Close-Grip Barbell Curl, and Kettlebell Curl train the same primary muscles as the Dumbbell Standing Single Arm Hammer Curl. Pick whichever one matches the equipment in front of you.