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Arms · EZ bar or dumbbell, preacher bench

Preacher curl: form, muscles and sets

The preacher curl pins the upper arm in place, so there is nowhere for momentum to hide — every rep is biceps.

Muscles worked: Biceps brachii (short head), Brachialis

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How to do it

  1. Set the pad so the top edge sits just under the armpit with the chest against it.
  2. Grip the bar shoulder-width with palms up; let the arms extend until nearly straight.
  3. Curl until the forearms are just past vertical, keeping the triceps glued to the pad.
  4. Squeeze at the top for a beat, then lower over three seconds.
  5. Stop just short of a locked elbow at the bottom to keep tension on the muscle.

Mistakes to avoid

  • Snapping into full extension at the bottom under a heavy load, which strains the elbow tendon.
  • Lifting the chest off the pad to finish a rep.
  • Setting the pad too low, so the shoulders round and the arm can cheat.

Sets and reps

GoalPrescription
Size3–4 sets of 8–12 reps, 60–90s rest
Peak contraction3 sets of 12–15 with a two-second squeeze
Single-arm fix3 sets per arm with a dumbbell to even out sides

Swaps and alternatives

  • Incline dumbbell curl — Loads the long head in the stretched position.
  • Cable curl — Constant tension with no elbow shock at the bottom.
  • Hammer curl — Adds brachialis thickness the preacher misses.

Common questions

What people ask about preacher curl

This guide covers preacher curl form, how to do preacher curls correctly, preacher curl muscles worked, preacher curl sets and reps for muscle growth, ez bar or dumbbell, preacher bench biceps brachii (short head) exercise and the swaps to run when a rack or bench is taken.

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