Hammer Curls — biceps isolation exercise in the LIFTAG library

Hammer Curls

Isolation · Weight × reps

Stand or sit with the dumbbells at your sides and palms facing each other. Keep that neutral grip as you bend the elbows and curl the weights toward your shoulders, then lower slowly to comfortable extension. Hold the wrists straight and upper arms mostly still. Avoid swinging the torso or letting the dumbbells rotate into a palms-up curl unintentionally. The neutral grip increases the contribution of the brachialis and brachioradialis while the biceps still works; alternating, simultaneous, and cross-body paths are distinct options, so use one consistently when tracking load or comparing sides.

IN THE APP

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Scan the machine's QR tag and this exercise opens ready to log: sets, rest timer, PRs, and your whole progression for Hammer Curls.

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HOW TO DO HAMMER CURLS

  1. Stand tall with a dumbbell in each hand, thumbs up, arms long. Neutral grip the whole way. If the pinkies rotate, you left this lift.
  2. Pin the elbows next to the torso. The bells travel beside the body, not out in front like a front raise.
  3. Curl toward the shoulders until the biceps and brachialis shorten. Wrists stay stacked, handle stays in line with the forearm.
  4. Lower to a full hang. Alternate or both at once; keep the thumbs pointing up on every rep.

COMMON MISTAKES

  • Supinating at the top and logging it here. The moment the pinkies turn up, it is a standing dumbbell curl with extra motion. Finish strict hammers or switch slugs. Do not blend them on one chart.
  • Logging these as standing dumbbell bicep curls. Palms-up and thumbs-up are different loads and a different arm. Keep hammer-curls. LIFTAG will not merge the grips for you.
  • Letting the bells drift into a front raise. Elbows leaving the ribs turns this into a shoulder exercise. Glue the upper arms and drop the load if they will not stay.
  • Hiking the bells off the thighs. A kip is not brachialis work. If you need a swing to start the curl, go lighter. Save the heavy grip for dumbbell-farmers-walk.

VARIATIONS

PROGRESSIONS

  1. Light bells, thumbs up the whole rep, no torso start.
  2. Working sets of 8–12 with the elbows quiet.
  3. Pause at the bottom before you add load.
  4. Cross-body only after the standard path is automatic, and write it in the note.

PROGRAMMING NOTES

Brachialis and forearm work: 3–4 sets of 8–12 after a palms-up curl. Do not log the palms-up work here. Log one bell. Cross-body stays on this slug only if the grip stays thumbs-up; put the path in the set note. Grip that dies here also shows up on dumbbell-farmers-walk, so do not smash both heavy in the same hour unless that is the point.

FREQUENTLY ASKED QUESTIONS

Straight up is the default. Across the body, toward the opposite pec, is still a hammer if the thumb stays up, but the load will not match. Pick one as the default and note the other. Do not chase a cross-body number with a strict week.