Biceps · Isolation movement

EZ-Bar Curl

A isolation exercise that targets the biceps with secondary work in forearms. Performed with EZ-curl bar.

EZ-Bar Curl demonstration, start of the movement, targeting the biceps

Looping the start and end of the movement.

Illustration: Everkinetic (CC BY-SA 4.0)

Primary muscle

Biceps

Secondary muscles

Forearms

Equipment

Barbell

Difficulty

Beginner

What is the EZ-Bar Curl?

The EZ-bar curl is a biceps isolation using the angled, zig-zag EZ bar instead of a straight barbell. The bends let the wrists sit in a slightly rotated, more natural grip, which keeps the wrists and elbows comfortable while still loading both arms together for easy progressive overload.

Muscles worked

Primary: Biceps
The biceps brachii flexes the elbows to curl the bar up; the semi-supinated EZ grip keeps the biceps heavily involved while easing wrist strain.
Secondary: Forearms
The forearm flexors assist with elbow flexion and grip on the angled bar.

How to perform the EZ-Bar Curl

  1. Grip an EZ-bar on its angled inner knurls with a semi-supinated grip, standing tall with the elbows tucked to the sides.
  2. The cambered bar lets the wrists sit in a slightly rotated, more neutral angle, which spares the wrists compared with a straight barbell curl.
  3. Brace the core and hold the upper arms vertical and still throughout the movement.
  4. Curl the bar upward by flexing the elbows while keeping the wrists firm on the angled grip.
  5. Squeeze the biceps just past vertical, keeping the elbows from swinging forward to shorten the lever.
  6. Lower the bar under control to full extension before beginning the next rep.

Suggested working range: 812 reps. Default progression: double progression.

Mechanics

A single-joint isolation: elbow flexion with the upper arms fixed at the sides, loading both arms on one bar. The EZ bar’s angled grips place the wrists in a partial supination that is gentler on the joints than a fully supinated straight bar.

Form cues

  • Grip the inner angled section so your wrists sit in a comfortable, slightly rotated position.
  • Keep the elbows pinned to your torso and curl by bending only the elbows.
  • Squeeze the biceps at the top without swinging the torso back to heave the bar.
  • Lower under control to a full stretch rather than dropping the bar to the thighs.

Common mistakes

  • Swinging the torso and using momentum to heave the bar up instead of strict elbow flexion.
  • Letting the elbows travel forward at the top to shorten the lever.
  • Bending the wrists under load rather than keeping them firm on the angled grip.
  • Failing to lower to full extension, cutting the range of motion short.

Variations & alternatives

  • Straight-bar barbell curl: keeps the wrists fully supinated for maximal biceps tension.
  • Preacher curl with an EZ bar: braces the arms to remove all momentum.
  • Reverse curl, flipping to a pronated grip on the EZ bar to hit the forearms.
  • Dumbbell curl, independent arms that even out side-to-side imbalances.

Programming: sets, reps & when to use it

Program the EZ-bar curl in the library’s 8–12 rep range as a primary biceps accessory: it’s the easiest curl to load progressively while staying joint-friendly. Run it after your back and pulling work, adding small increments over time within that range. A few strict sets is enough.

Frequently asked questions

EZ bar or straight bar for curls?

The EZ bar’s angled grip keeps the wrists in a more natural position and is easier on the joints for most people, while a straight bar keeps the forearms fully supinated for a slightly stronger biceps contraction. Use whichever lets you curl pain-free and keep progressing.

Where on the bar should I grip?

Grip the inner set of angles for a narrower, more biceps-focused curl, or the outer angles for a slightly wider grip. Both are fine, so choose the one that keeps your wrists comfortable under load.

Use this exercise in a program

The EZ-Bar Curl fits naturally into hypertrophy and strength splits that prioritize biceps volume.

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