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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.
- 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.
- 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.
- 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.
- Step 4Lower the Bar
- Lower the bar back to the starting position, fully extending your arms.
- Maintain control and avoid swinging the bar.
- 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.
- 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.
- 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.
- Step 8Finish the Exercise
- After completing your reps, carefully lower the bar to your thighs.
- Stand upright and safely put down the EZ bar.