Lock your arm to the pad and isolate every fiber.
Don't fully lock out at the bottom, keep a slight bend to protect the elbow.
The Single-Arm Preacher Curl isolates the Biceps — no passengers. That makes it a clean tool for adding targeted biceps volume without extra fatigue.
The Single-Arm Preacher Curl primarily works the Biceps.
Pick a weight where you finish each set with 1 to 2 clean reps left in the tank. Own the top of your rep range before adding weight.
Yes, it's a unilateral movement. Start with your weaker side and match the reps with your stronger side so no side gets ahead.
