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Last updated February 2, 2026
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bicepsforearmstriceps

21S Bicep Curl - (EZ Bar)

Perform 7 partial reps from bottom to middle, 7 reps from middle to top, and 7 full reps. This high-volume set creates an intense burn.

Quick facts

Difficulty
Moderate
Mechanic
Isolation
Force
Pull
Type
Strength
Injury Risk
Moderate
Hypertrophy
High
Calorie Burn
Low-Medium

Muscle focus

Primary and secondary muscle groups targeted by this movement.

Primary

biceps

Secondary

forearm flexors

Equipment & setup

What you need and how to position yourself before starting.

Equipment

ez barbell

Movement pattern

Bilateral

Posture

Standing

Tracking parameters

repsweight

Step-by-step instructions

Follow these cues to master proper technique and stay safe through every rep.

  1. Step 1Setup
    • Stand upright with your feet shoulder-width apart.
    • Hold an EZ bar with an underhand grip, hands positioned on the angled parts of the bar.
  2. Step 2Position Your Arms
    • Let the bar hang at arm's length in front of your thighs.
    • Keep your elbows close to your torso and your wrists straight.
  3. Step 3First Half of the Curl
    • Curl the bar up to the halfway point (about 90 degrees) by bending your elbows.
    • Focus on squeezing your biceps at the top of this movement.
  4. Step 4Lower the Bar
    • Lower the bar back to the starting position, fully extending your arms.
    • Maintain control and avoid swinging the bar.
  5. Step 5Second Half of the Curl
    • Curl the bar up again, this time all the way to your shoulders.
    • Ensure your elbows stay close to your body throughout the movement.
  6. Step 6Lower the Bar Again
    • Lower the bar back to the halfway point (90 degrees) and then back down to the starting position.
    • Control the movement to avoid any jerking or swinging.
  7. Step 7Repeat
    • Perform the 21s by completing the first half and second half of the curl for the desired number of repetitions.
    • Focus on maintaining good form throughout each rep.
  8. Step 8Finish the Exercise
    • After completing your reps, carefully lower the bar to your thighs.
    • Stand upright and safely put down the EZ bar.
Version 1 · Created November 12, 2025