EZ Bar Curl

The EZ Bar Curl is a foundational bicep exercise that uses a curved barbell to target the arms while reducing strain on the wrists. It allows for heavy loading to build muscle mass in the biceps and forearms.

Exercise movement reviewed by:Cody Lockling, MS, CSCS
How Iridium Helps

Tracking your actual load and RPE is crucial for the EZ Bar Curl, as 'cheating' with momentum often masks true strength gains; the AI detects when your progress stalls and adjusts intensity to prevent plateauing. Since bicep isolation can strain the elbows if recovery is poor, the app analyzes your sleep and HRV data to recommend lighter volume or tempo work when your connective tissue needs rest. Additionally, if you log wrist pain, the system learns to prioritize this ergonomic variation over straight-bar alternatives.

Form Cues

Do
  • Grip the angled curves of the bar with palms facing up
  • Tuck your elbows tight against your ribcage throughout the set
  • Squeeze your biceps hard at the top of the curl
  • Lower the weight slowly and under control for a full stretch
  • Keep your torso upright and engage your core
Don't
  • Don't swing your hips to generate momentum
  • Don't let your elbows flare out or drift forward
  • Don't cut the range of motion short at the bottom
  • Don't lean back excessively as you lift the weight
  • Don't curl your wrists inward at the top of the movement

Common Mistakes

  • Using excessive momentum or body sway
  • Lifting elbows forward to rest at the top
  • Performing partial reps without full extension
  • Selecting a weight that is too heavy to control
  • Locking the knees during the set

Muscles Worked

This exercise primarily targets the biceps brachii (both long and short heads) to build arm size and strength. The semi-supinated grip provided by the EZ bar specifically engages the brachialis and brachioradialis in the forearms effectively, while the ergonomic angle significantly reduces stress on the wrist joints compared to a straight barbell.

Primary

Biceps Short HeadBiceps Long Head

Secondary

Forearms

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