The preacher curl is named after Larry Scott, the bodybuilder who popularised it (called the “preacher’s bench” because the angled pad resembles a church pulpit). It’s the biceps exercise that loads the muscle in its most stretched position — at the bottom of the rep, when the biceps is lengthened over the bench pad.
The preacher curl is brutal. The combination of strict position + bottom-range stretch + biceps overload makes it one of the most effective hypertrophy exercises for the lower portion of the biceps. It’s also demanding on the elbow tendons — work up to it, don’t ego-load.
What is the preacher curl?
The preacher curl is an isolation exercise for the biceps performed on a preacher bench, in which you sit (or stand) with your upper arms supported on an angled pad. From this fixed position, you curl an EZ bar, barbell, or dumbbell up to your shoulders, then lower under control. The angled pad prevents shoulder cheat and isolates the biceps in their stretched position.
The preacher curl loads the biceps differently than other curl variations. The bottom of the rep — when the arms are nearly extended — is the hardest part. That stretched position is where the biceps experiences maximum mechanical tension, which drives muscle growth. The flip side: it’s also stressful on the elbow joint at heavy loads.
Muscles worked
| Muscle group | Role | Contribution |
|---|---|---|
| Biceps brachii (lower portion emphasis) | Primary mover, elbow flexion under stretch | ~75 % |
| Brachialis | Elbow flexion | ~20 % |
| Brachioradialis | Forearm flexion | ~5 % |
The preacher curl loads the lower portion of the biceps brachii harder than the standard curl. The angled position with the upper arm fixed in shoulder flexion (about 45° forward) puts the biceps in a stretched position from which it has to overcome maximum mechanical disadvantage. That stretch + tension combo drives hypertrophy.
How to preacher curl: 5 steps
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Set up the preacher bench
Adjust the bench so the top of the pad is at armpit height when seated. Sit on the bench, drape your upper arms over the angled pad. Armpits firmly against the top of the pad.
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Grip the bar
Have a partner hand you the EZ bar (or pick it up if soloing). Grip with both hands shoulder-width apart, palms up. Arms extended down the pad — slight bend at the elbows at the start.
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Curl up with intent
Bend the elbows to bring the bar toward your shoulders. **Squeeze the biceps** as the bar rises. Upper arms remain braced against the pad — they do not move.
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Pause at the top
Half-second pause when bar reaches near the shoulders. Don't curl all the way to the chest — peak biceps contraction is at about 90° elbow flexion.
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Lower in 2-3 seconds
Controlled eccentric. **Stop just short of full extension** at the bottom — don't hyperextend the elbow. Feel the stretch in the biceps. Reset, repeat.
Common mistakes to avoid
Variations
- EZ bar preacher curl. The standard. EZ bar reduces wrist strain.
- Dumbbell preacher curl. Two dumbbells or one at a time. Allows asymmetry-fixing.
- Single-arm preacher curl. One arm at a time. Better mind-muscle.
- Cable preacher curl. Cable from a low pulley. Constant tension throughout.
- Reverse-grip preacher curl. Overhand grip. More brachioradialis and brachialis.
- Spider curl. Lying chest-down on a steeper incline. Peak contraction at the top instead of stretched at bottom.
Sample workout: 4-week biceps block
Preacher curls 1-2 times per week, after compound back work. Reps in moderate range — preacher curls don’t respond well to very heavy or very high-rep work.
| Week | Sets × reps | Tempo |
|---|---|---|
| 1 | 3 × 10 | 2 sec eccentric |
| 2 | 4 × 8 | 2 sec eccentric + 1 sec pause at bottom stretch |
| 3 | 4 × 8 + 1 dropset | 3 sec eccentric + 2 sec pause |
| 4 (deload) | 3 × 10 | Smooth |
Frequently asked questions
Preacher curl or concentration curl?
Both isolate the biceps strictly. Concentration curl is single-arm and uses thigh as brace. Preacher curl is bilateral (or unilateral) with bench brace. Preacher loads the bottom-stretched position harder; concentration loads peak contraction. Cycle through both.
Why do my elbows hurt during preacher curls?</h3
Two common causes: load too heavy, or hyperextending the arm at the bottom. Stop short of full extension at the bottom — let the bar reach a small bend in the elbow rather than locked out. Use an EZ bar instead of a straight bar.
How heavy should I preacher curl?</h3
Lighter than your standard curl. The strict position prevents cheating, so the load that lets you do 8 strict standing curls only allows about 5-6 strict preacher curls. Adjust accordingly.
EZ bar or straight bar?</h3
EZ bar for nearly everyone. The angled grip reduces wrist strain meaningfully. Straight bar is fine if your wrists handle it but the EZ bar is the safer default.
Should I lock out at the bottom?</h3
No. Stop just before full extension. Locking out hyperextends the elbow joint at peak load — bad combo. Slight bend at the bottom keeps tension on the biceps and protects the joint.
Related exercises
- Dumbbell Curl: standing foundational
- Concentration Curl: thigh-braced isolation
- Spider Curl: peak contraction variant
- Cable Curl: constant tension
- Hammer Curl: brachialis variant
