Preacher Curl
Primary
Biceps
Secondary
Brachialis, Forearms
Equipment
Ez Bar
Difficulty
Intermediate
Type
Pull
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The preacher curl locks your upper arms against a pad, eliminating all momentum and forcing your biceps to do 100% of the work. This strict isolation emphasizes the stretched position at the bottom of the curl, where your biceps are most vulnerable but also most stimulated. The shoulder-forward position targets the short head of the biceps.
When to use it
Use for strict bicep isolation, eliminating momentum.
Who it's for
Intermediate to advanced. Great for focusing on bicep contraction.
Never fully lock out your elbows at the bottom—stop just short of full extension to protect your tendons. On the way up, think about driving your pinkies toward your shoulders rather than just bending your elbows. This cue maximizes bicep contraction.
Preacher Curl — targeted muscles
How do you perform the Preacher Curl?
- 1
Sit at a preacher bench with upper arms resting on the pad.
- 2
Grip an EZ bar or barbell with underhand grip.
- 3
Start with arms extended but not hyperextended.
- 4
Curl the weight up toward your shoulders.
- 5
Squeeze biceps at the top of the movement.
- 6
Lower slowly under control to starting position.
What are the best tips for the Preacher Curl?
Keep your chest against the pad throughout.
Dont let your arms fully lock out at the bottom.
Focus on the stretch at the bottom of each rep.
When to Use the Preacher Curl
Program preacher curls after your primary bilateral curl movement (barbell or EZ-bar). The strict isolation makes them ideal for moderate to high rep ranges (10-15). Use them when you want to eliminate cheating and focus purely on bicep contraction.
Common Preacher Curl mistakes
Hyperextending elbows at bottom - risks injury.
Letting your elbows drift wide during the Preacher Curl shifts load onto your shoulder joint instead of your Biceps brachii (especially long head). Keep them tucked at about 45 degrees to protect your rotator cuff and keep tension where it belongs.
Lifting butt off seat - reduces isolation.
Losing hip position during the Preacher Curl shifts the loading pattern away from your Biceps brachii (especially long head) and can compress your lower back. Stay planted and let your Biceps brachii (especially long head) do the work.
Using too much weight causing swing - defeats purpose of exercise.
Bouncing or using momentum during the Preacher Curl takes work away from your Biceps brachii (especially long head) and puts your connective tissue at risk. Control the weight through the full range — if you can't, lower the load.
Preacher Curl — who it's best for
Intermediate to advanced. Great for focusing on bicep contraction.
How to Program the Preacher Curl
Lower reps with heavier weight builds raw strength. Your muscles and nervous system adapt to handle more load over time. This range is best for strength-focused goals.
This rep range keeps your muscles under tension long enough to trigger growth. Most people see the best muscle-building results in this zone. It balances strength and muscle size.
Higher reps with lighter weight builds muscular endurance and improves conditioning. This range is good for joint health and building work capacity.
General guideline: 3 sets of 10-12 reps. Rest 60 seconds.
What are good alternatives to the Preacher Curl?
Concentration Curl
Spider Curl
Machine Preacher Curl
Other Variations
- Dumbbell Preacher Curl
- Cable Preacher Curl
- Single Arm Preacher Curl
Frequently Asked Questions About the Preacher Curl
The Preacher Curl primarily targets the Biceps brachii (especially long head), making it an effective exercise for biceps development. Secondary muscles worked during the Preacher Curl include Brachialis, providing additional training stimulus. Stabilizer muscles engaged include Wrist flexors.
The Preacher Curl is rated as intermediate difficulty, meaning it requires some training experience. Intermediate to advanced. Great for focusing on bicep contraction. Focus on proper technique and consider starting with easier variations.
For the Preacher Curl, the recommended approach depends on your goals. 3 sets of 10-12 reps. Rest 60 seconds. For strength, use 4-6 reps. For muscle growth, perform 8-12 reps. For endurance, complete 15-20 reps.
The Preacher Curl typically requires a ez bar, which most home gyms don't have. For a home-friendly alternative targeting the same muscles, check the variations section above.
Good alternatives to the Preacher Curl include: Concentration Curl, Spider Curl, Machine Preacher Curl. These exercises target similar muscle groups as the Preacher Curl and can be used as substitutes based on your equipment availability, gym setup, or training preferences.
This Exercise Is in Your Plan
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Related Content
Safety Notes
- Never fully lock out elbows under load.
- Control the weight throughout.
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Compare This Exercise
Preacher Curl vs Standing EZ Bar Curl
Preacher curls isolate the biceps with zero momentum by locking your arms against a pad, making them ideal for strict isolation and targeting the lower bicep near the elbow. Standing curls allow heavier weights and some body English, making them better for overall arm strength and progressive overload. For maximum bicep development, include both variations in your program: standing curls early in the workout when fresh for heavier loading, and preacher curls as a finisher for strict pump work.
Preacher Curl vs Concentration Curl
Concentration curls maximize mind-muscle connection and peak contraction, while preacher curls emphasize the stretched position with heavier loading. Both isolate the biceps effectively for different purposes.