Skip to content
Crucible Fit
  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Pricing
Get Crucible
  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Apple Watch
  • Pricing
  • FAQ
  • Training Guides
Get Crucible
Crucible Fit

A daily functional fitness test for iPhone, Apple Watch and Android. Stations, reps and the Crux, sized to your readiness and your kit.

Download on the App StoreGet it on Google Play

Crucible Fit

  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Apple Watch
  • Pricing

Explore

  • Training Guides
  • Exercise Library
  • FAQ
  • Press
  • Support

Legal

  • Terms and Conditions
  • Privacy Policy
  • Consumer Health Data Notice

CRUCIBLE FIT™ and Crux by Crucible Fit are trademarks of Crucible Fit, LLC.

© 2026 Crucible Fit, LLC. All rights reserved. Apple, the Apple logo, iPhone and Apple Watch are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc. Google Play and the Google Play logo are trademarks of Google LLC.

  1. Home
  2. /
  3. Exercises
  4. /
  5. Arms
  6. /
  7. EZ Barbell Seated Curls

Exercise guide

EZ Barbell Seated Curls

  • Intermediate
  • Isolation
  • Rep-based
  • Upper arms

The seated EZ bar curl is a highly effective isolation movement that targets the biceps while the angled bar reduces strain on the wrists. By performing this seated, you minimize lower-body momentum, forcing the biceps to handle the entire load.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the EZ Barbell Seated Curls demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Biceps

Secondary

  • Forearms

Equipment

  • Ez barbell

Setup

  1. Sit on the edge of a flat bench with your feet planted firmly on the floor for stability.
  2. Grasp the EZ bar on the outer angled grips with an underhand (supinated) grip.
  3. Rest the bar across your thighs with your arms fully extended and your back straight.

How to do it

  1. Exhale as you curl the bar toward your chest by flexing at the elbows, keeping your upper arms pinned to your sides.
  2. Squeeze your biceps hard at the top of the movement for one second.
  3. Inhale as you slowly lower the bar back to the starting position on your thighs using a controlled 2-3 second tempo.

Form checklist

  • Keep your elbows tucked into your ribcage throughout the entire set.
  • Maintain a tall, upright posture; do not lean back as you lift.
  • Keep your wrists in a strong, neutral position without letting them curl or flop.
  • Ensure the movement only occurs at the elbow joint.

Pro tips

  • Focus on driving your pinkies toward your shoulders at the top of the curl to maximize peak contraction.
  • Avoid resting the bar completely on your thighs at the bottom to maintain constant tension on the biceps.

Make it harder

  • Implement a 4-second eccentric (lowering) phase to increase time under tension.
  • Perform 'top-half' partial reps after reaching failure on full-range reps to further fatigue the muscle.

Frequently asked

What muscles does the ez barbell seated curls work?
The ez barbell seated curls primarily targets the biceps, and also works the forearms as secondary muscles.
What equipment do you need for the ez barbell seated curls?
The ez barbell seated curls uses ez barbell.
Is the ez barbell seated curls good for beginners?
The ez barbell seated curls is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.

Related exercises

  • Arm Double CrossoverIntermediate · biceps, deltoids, and triceps
  • Arms Stretch On A SupportBeginner · biceps, deltoids, and pectorals
  • Band 45 Degrees Biceps CurlBeginner · biceps
  • Band 45 Degrees One Arm Biceps CurlBeginner · biceps

Train it with Crucible Fit.

Every movement in this library is in the app with video and instructions, ready for your own sessions on the days between Crucibles. Your first Crucible is on us.

Download on the App StoreGet it on Google Play

See how a Crucible works