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isolation-elbow-flexionskill 1/5dumbbell

Dumbbell Biceps Curl

Also called: curl, db curl, standing dumbbell curl

The isolation classic. Elbow flexion, zero momentum, maximum connection — exactly where internal cues shine.

Primary: BicepsSecondary: Forearms
Front deltsSide deltsPecs (chest)BicepsForearmsAbsObliquesDeep coreAdductorsQuadsfront
Upper trapsMid/lower trapsRhomboidsRear deltsTricepsLatsSpinal erectorsGlute medGlutesHamstringsCalvesback

Technique

How to do it

  1. 1

    Stand tall, dumbbells at your sides, palms forward.

  2. 2

    Pin your elbows to your ribs; curl without swinging.

  3. 3

    Squeeze hard at the top for a full second.

  4. 4

    Lower slowly — the way down builds as much as the way up.

Cue bank

Two cues, picked by context

Internal cues for growth work at moderate loads; external cues when the bar is heavy. The app switches automatically.

internal · hypertrophy

Feel the biceps shorten and cramp at the top.

external · heavy sets

Bring the weight to your shoulder.

Common faults

What to watch for

Standard coaching taxonomy for this movement. A dedicated Harry Spotter rubric is on the roadmap.

tip

Swinging the hips

Momentum trains your ego, not your biceps.

Fix: Back against a wall for a set — humbling and effective.

tip

Elbows drifting forward

Turns the curl into a front raise cameo.

Fix: Elbows glued to ribs; move only the forearm.

tip

Half-range reps

The stretch position is prime growth real estate.

Fix: Full extension at the bottom, every rep.

Substitutions

Same pattern, different flavor