Single Arm Dumbbell Preacher Curl — biceps isolation exercise in the LIFTAG library

Single Arm Dumbbell Preacher Curl

Isolation · Weight × reps

The supported position limits body momentum but does not isolate one biceps head; use the free hand for a careful handoff or light assistance when approaching fatigue.

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 Single Arm Dumbbell Preacher Curl.

FOUND ON THESE MACHINES

HOW TO DO SINGLE ARM DUMBBELL PREACHER CURL

  1. Set the preacher bench so your armpit rests near the top edge and your working upper arm is fully supported.
  2. Hold one dumbbell with an underhand grip and begin with the elbow almost straight, not forcefully locked.
  3. Curl toward your shoulder without lifting the arm from the pad, then lower slowly through a range you can control.
  4. Keep your wrist stacked and your chest steady instead of twisting toward the weight.

FREQUENTLY ASKED QUESTIONS

Open Single Arm Dumbbell Preacher Curl in LIFTAG, or tap the NFC tag / scan the QR code on the machine at a partner gym. Log each working set as weight × reps. The rest timer starts after you save the set, and PRs plus estimated 1RM update automatically.