Hammer curl

The central task in Hammer curl is elbow flexion led by Biceps and supported by Brachialis; brachioradialis. Programming role — Add elbow-flexor and forearm thickness with neutral grip. Defining feature — Neutral grip emphasizes brachialis/brachioradialis.
Arms
Isolated

At a glance

Difficulty
Easy
Exercise Type
Hypertrophy
Muscle Group
Biceps
Equipment
Dumbbell
Force Type
Pull
connection_pattern [#1105] Created with Sketch. Mechanics
Isolation

Why this exercise matters

Hammer curl matters because it has a clearly defined training role: Add elbow-flexor and forearm thickness with neutral grip. Its structure keeps the exercise choice specific to the intended adaptation.
  • Primary stimulus — Biceps leads the movement; Brachialis; brachioradialis contributes.
  • Programming role — Add elbow-flexor and forearm thickness with neutral grip.
  • Why this version — Neutral grip emphasizes brachialis/brachioradialis.

How to perform

Use 2–4 × 10–15 reps as a working template and allow about 60–90 sec between sets. The aim is repeatable tension, not simply moving the heaviest load.
  1. Equipment setup — Prepare Dumbbells or rope cable and choose a load that preserves the intended elbow flexion.
  2. Starting position — Fix the upper-arm position and start with neutral wrists before bending the elbows.
  3. Repetition path — Curl the load by bending the elbow while the upper arm stays quiet.
  4. Exercise-specific cue — Keep wrist neutral and elbow still.
  5. Set endpoint — End the set when the target muscles can no longer control the same path and tempo.

What to avoid

The main safeguard is exercise-specific: Keep wrist neutral and elbow still. Load and range should preserve the defining elbow flexion pattern.
  • Setup risk — Confirm that Dumbbells or rope cable is stable and correctly adjusted before loading.
  • Technique limit — Do not chase repetitions once the intended path changes or another body segment takes over.
  • Joint response — Reduce load or range for sharp, increasing, or joint-specific pain.
  • Progression — Add resistance only after the listed cue can be maintained across the whole set.

Target Muscle