How to Do the Preacher Curl

The preacher curl braces your upper arms on an angled pad so you can't cheat with momentum. That isolates the biceps and puts the hardest part of the curl near the bottom, where the muscle is stretched. It suits beginners learning a strict curl and anyone who tends to swing the weight.

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Muscles worked

Primary

  • Biceps

Secondary

  • None to speak of

How to do the Preacher Curl

  1. 1

    Adjust the seat so your armpits rest on top of the pad and your upper arms lie flat on it.

  2. 2

    Grab the bar or dumbbells with an underhand grip.

  3. 3

    Lower the weight slowly until your arms are almost straight.

  4. 4

    Curl the weight up by bending your elbows until your forearms are near vertical.

  5. 5

    Squeeze your biceps at the top without letting your elbows lift off the pad.

  6. 6

    Lower for about two to three seconds back to the start.

Form cues to remember

  • Armpits on top of the pad
  • Elbows stay glued to the pad
  • Lower for a slow count of three
  • Stop just short of locking out

Preacher Curl video tutorial

How to PROPERLY DO Machine Bicep Curls (Machine Preacher Curls) · Colossus Fitness on YouTube

Common mistakes

Lifting your elbows off the pad

Reduce the weight and keep your upper arms in contact with the pad.

Dropping the weight fast

Control the lowering phase for two to three seconds.

Locking your elbows hard at the bottom

Stop just short of full lockout, which protects the biceps tendon.

Going too heavy

Pick a weight you can curl strictly without leaning back.

Sets and reps

Muscle growth3–4 sets of 8–12 reps, 60–90 sec rest
Endurance2–3 sets of 12–20 reps, 45 sec rest

The stretched bottom position stresses the biceps tendon, so don't drop the weight or yank out of the bottom. Go lighter if you feel a sharp pain near the elbow.

Superlift for iPhone

Track your Preacher Curl and watch it go up

Superlift shows what you lifted last time, times your rest, and charts your strength week by week, so you always know what to beat. Every exercise in this library is built in, with the same demos and tutorials.

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Logging sets, reps and weight in SuperliftStrength progression chart in SuperliftExercise instructions and video tutorials in Superlift

Preacher Curl FAQ

What does the preacher curl work that a standing curl doesn't?

The pad removes swinging and shoulder help, so the biceps do almost all the work. It also loads the muscle in a stretched position at the bottom.

Should I fully straighten my arms on the preacher curl?

Nearly, but not with a hard lockout. Stopping just short keeps tension on the biceps and is gentler on the tendon at the elbow.

Is the preacher curl good for biceps size?

Yes, because its strict, stretched position is a good way to add biceps volume. Pair it with an incline or standing curl to cover different muscle lengths.

Preacher Curl alternatives

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