Exercise guide
Dumbbell Alternate Biceps Curl
- Beginner
- Isolation
- Rep-based
- Upper arms
This isolation exercise targets the biceps brachii, allowing for a greater focus on each arm individually to correct imbalances. By alternating sides, you can maximize the mind-muscle connection and achieve a stronger peak contraction through wrist supination.
Reviewed by the Crucible Fit team · Updated June 2026
Muscles worked
Setup
- Stand with feet shoulder-width apart, holding a dumbbell in each hand at your sides.
- Maintain a neutral grip with palms facing your torso and shoulders pulled back.
- Keep a slight bend in your knees and engage your core to stabilize your torso.
How to do it
- Exhale as you curl one dumbbell toward your shoulder, rotating your palm upward as the weight passes your thigh.
- Squeeze the bicep at the top of the movement for a one-second pause.
- Inhale as you slowly lower the weight back to the starting position with a controlled 2-3 second tempo.
- Repeat the movement with the opposite arm, alternating sides until the set is complete.
Form checklist
- Keep your elbows pinned to your ribcage; do not let them swing forward or flare out.
- Avoid using momentum or swinging your torso to lift the weight.
- Fully extend your arm at the bottom of each rep for a full range of motion.
- Keep your wrists straight and firm throughout the curl.
Pro tips
- Focus on turning your pinky finger toward your shoulder at the top of the rep to maximize bicep peak contraction.
- Keep the non-working arm fully extended and under tension to maintain stability and prevent swinging.
Make it harder
- Perform the exercise seated on an incline bench to increase the stretch on the long head of the biceps.
- Add a 3-second isometric hold at the midpoint (90-degree angle) of each repetition.
Frequently asked
- What muscles does the dumbbell alternate biceps curl work?
- The dumbbell alternate biceps curl primarily targets the biceps.
- What equipment do you need for the dumbbell alternate biceps curl?
- The dumbbell alternate biceps curl uses dumbbell.
- Is the dumbbell alternate biceps curl good for beginners?
- Yes. The dumbbell alternate biceps curl is a beginner-friendly movement and a strong foundation to build on.