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BOXROX
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    BOXROX
  • Posted on:

    September 15th 2026

Hammer Curls vs Preacher Curls: Which Builds Wider Biceps?

If you want wider looking upper arms, hammer curls and preacher curls can both earn a place in your training. They are not interchangeable, though. Each exercise changes the position of your forearm and shoulder, which affects which elbow flexor muscles are emphasized and how easily you can load them with control.

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