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Exercise · Arms

Barbell preacher curl

The barbell preacher curl uses the preacher bench to lock in your arms and focus on your biceps. The pad limits body swing so your biceps do most of the work, with some help from your forearms. It’s a good pick if you want to feel your arms without loading your lower back too much.

Doable at all 76 gyms GoSet follows

Barbell preacher curl

The essentials

  • Armpits against the top of the pad.
  • Don’t drop into straight arms at the bottom.

Muscles worked

Primary
Biceps
Secondary
Forearms

How to do it

  1. 1. Pick a fixed-weight barbell you can control, and adjust the preacher bench so the top of the pad sits just under your armpits.
  2. 2. Set your armpits against the top of the pad, chest supported, feet flat on the floor for a stable base.
  3. 3. Grab the bar with your hands about shoulder-width apart, arms extended but without dropping into straight, locked elbows.
  4. 4. Keeping your upper arms glued to the pad, bend your elbows and curl the bar up with control, without swinging your back.
  5. 5. As you reach the top, squeeze your biceps for a second without shrugging your shoulders up toward your ears.
  6. 6. Lower the bar in 2–3 seconds, staying in control, and stop just before full extension so you don’t drop into straight arms at the bottom.

Common mistakes

  • Letting your arms snap at the bottom

    Instead : Keep a slight bend at the bottom of the rep. Think about braking the bar on the way down for 2–3 seconds and never dropping into straight arms at the bottom.

  • Lifting your armpits off the pad

    Instead : Keep your armpits pressed against the top of the pad the whole time. If you have to lift your torso to finish the rep, the weight is too heavy or the set is done.

  • Using shoulders and back to cheat

    Instead : Lock your upper body onto the preacher bench and focus on only bending at the elbows. If you feel your back jerking to help, reduce the weight.

  • Very short range of motion

    Instead : Lower the bar under control until you feel a good stretch in your biceps without pain, but without fully relaxing at the bottom. Then curl back up to a comfortable full bend at the elbow.

Coach tips

  • Keep your breathing steady: inhale as you lower the bar, exhale as you curl and squeeze your biceps.
  • Hold the bar solidly in your hands, not just in your fingertips, to control the bar better and manage forearm strain.
  • Start with a lighter bar to find the right pad height, hand position, and range of motion you can control well.
  • To really feel your biceps, think about pushing your armpits into the top of the pad the whole time to keep your arms stable.

Variations

  • You can bring your hands a bit closer on the bar for a different feel in your biceps, as long as you keep the weight under control.
  • You can also slide your hands a bit wider to see where you feel stronger and more stable, without going to extremes.
  • If the bar bothers your wrists, you can switch to an alternative like the cable biceps curl or the rope hammer curl.

Sets and reps

For strength training, people often use 3–4 sets of 8–12 controlled reps on the barbell preacher curl. Others go with lighter, higher-rep sets to focus on feeling the biceps without heavy loading.

Equipment

Alternatives for the same muscles

Log your Barbell preacher curl sets with GoSet

GoSet remembers your last time, starts your rest on its own and notes your records. Even with no signal in the basement. Coming soon to iPhone and Android.

Common questions

Which muscles does the barbell preacher curl work?

The barbell preacher curl mainly trains your biceps. Your forearms also work to hold and control the bar during the movement.

What kind of bar should I use for preacher curls at the gym?

You can use the fixed-weight barbells at your gym, choosing a weight you can control from start to finish without cheating with your back or dropping into straight arms at the bottom.

How do I know if the preacher bench is set correctly?

When you’re in position, the top of the pad should sit right under your armpits so your armpits stay against the top of the pad and your arms rest comfortably on the support.

What if I feel pain in my elbow or biceps?

If you feel pain in your elbow or biceps while doing preacher curls, stop the exercise. Talk with a health professional or a training specialist before you continue.

Updated October 27, 2026 · The GoSet team

This guide does not replace a training or health professional. If something hurts, stop and ask for advice.