Biceps · Isolation movement
Machine Preacher Curl
A isolation exercise that targets the biceps. Performed with weight machine.
Primary muscle
Biceps
Secondary muscles
—
Equipment
Machine
Difficulty
Beginner
How to perform the Machine Preacher Curl
- Adjust the seat so the pad sits under your armpits and the axis of the machine lines up with your elbows.
- Grip the handles with a supinated grip and rest the backs of the upper arms flat against the angled pad.
- The fixed machine path locks the arm angle, which makes it easy to grind slow eccentrics and drop sets without stabilizing.
- Curl the handles up by flexing the elbows while keeping the upper arms pressed into the pad.
- Squeeze the peak contraction, then resist the lever on the way down rather than letting it slam back.
- Stop just short of full elbow lockout at the bottom to protect the tendon under the machine load.
Suggested working range: 10–15 reps. Default progression: double progression.
Common mistakes
- •Setting the seat wrong so the elbows do not line up with the machine pivot.
- •Lifting the upper arms off the pad to cheat with shoulder movement.
- •Slamming the lever into a hard bottom lockout instead of stopping short.
- •Letting the lever drop fast rather than resisting the eccentric.
Variations & alternatives
Swap in a related movement if equipment, recovery, or progression demands it.
Use this exercise in a program
The Machine Preacher Curl fits naturally into hypertrophy and strength splits that prioritize biceps volume.
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