Preacher Curl

The preacher curl places the upper arm against a padded angled surface, typically at 45 degrees. With the arm braced, only the forearm moves — flexing at the elbow to curl the weight up, then extending back to the starting position. The braced arm position eliminates the ability to sway the torso or use the front deltoid to initiate the movement.

The angled pad positions the bicep at a lengthened starting angle, meaning the muscle is stretched under load at the bottom of the rep. Research on resistance training suggests that loading muscles in a stretched position is particularly effective for hypertrophy, which is why the preacher curl consistently produces strong results for bicep development despite the limited weight used.

An EZ-bar reduces wrist supination stress compared to a straight bar; dumbbells allow one arm at a time and prevent the stronger arm from compensating. Both are valid. The key variable is range of motion — a full extension at the bottom is more productive than cutting the range short to use heavier weight.

• Full extension at the bottom — let the arm straighten completely before each rep
• Upper arm stays against the pad throughout — do not pull the elbow off the pad to help at the top
• Squeeze at the top but do not jerk — smooth reversal maintains tension
• Control the negative — the eccentric builds as much as the concentric

• Cutting the range of motion short at the bottom — the stretch is the stimulus; get the full extension
• Lifting the elbows off the pad at the top — this recruits the front deltoid and reduces bicep isolation
• Using too much weight — preacher curls are an isolation movement; heavy cheating defeats the purpose

• dumbbell curl→
• chin up→
• cable row→