One Arm Dumbbell Preacher Curl Exercise

Builds strength and control by improving stability, coordination, and efficient movement.

One Arm Dumbbell Preacher Curl
One Arm Dumbbell Preacher Curl
Level: beginner
Equipment: dumbbell
Force: pull
Mechanic: isolation
Core muscles: biceps
Secondary muscle: none

Description

One arm dumbbell preacher curl focuses on controlled movement and maintaining proper body alignment throughout the exercise. The goal is to create tension where needed while avoiding unnecessary strain or momentum. This helps improve movement quality, joint stability, and overall physical control.

Instructions:

  1. Grab a dumbbell with the right arm and place the upper arm on top of the preacher bench or the incline bench. The dumbbell should be held at shoulder length. This will be your starting position.
  2. As you breathe in, slowly lower the dumbbell until your upper arm is extended and the biceps is fully stretched.
  3. As you exhale, use the biceps to curl the weight up until your biceps is fully contracted and the dumbbell is at shoulder height. Again, remember that to ensure full contraction you need to bring that small finger higher than the thumb.
  4. Squeeze the biceps hard for a second at the contracted position and repeat for the recommended amount of repetitions.
  5. Switch arms and repeat the movement.

Exercise FAQ

How should I program this in a workout?

Use it after your warm-up when you’re fresh. Aim for 2–4 sets and choose a rep range that matches your goal (strength: lower reps; muscle: moderate reps). Think of it as curling done with repeatable, clean reps.

What should I focus on to keep good form?

Move with control and keep your torso stable. Use a range of motion you can own, and stop the set if you need momentum to finish reps. Think of it as curling done with repeatable, clean reps.

Does grip or stance matter?

Yes—small changes can shift what you feel and how stable you are. Pick the most controlled position and keep it consistent while you learn the movement.

Disclaimer

This content is for educational purposes only and does not replace professional medical or fitness advice. Consult a qualified healthcare provider before beginning any new exercise routine. Exercise safely and listen to your body.

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