Hammer Curl (forearm focus)
Primary
Forearms
Secondary
Biceps, Brachialis
Equipment
Dumbbell
Difficulty
Beginner
Type
Pull
NASM-CPT, CSCS certified trainers. Every guide is built from peer-reviewed research and real coaching experience.
A multi-joint movement that builds overall strength, the Hammer Curl (forearm focus) targets your forearms through a pulling movement pattern. Include on arm day or pull day. Excellent for balanced bicep and forearm development.
Everything You Need to Know About the Hammer Curl (forearm focus)
The Hammer Curl (forearm focus) is a good for beginners exercise that targets your Forearms (flexors) and Brachioradialis. It's a popular choice for building strength and muscle in these areas. When should you use it? Include on arm day or pull day. Excellent for balanced bicep and forearm development. This timing makes the most of your workout and helps you get better results. Who is this for? All fitness levels. Great for building arm thickness and forearm mass. Whether you're just starting out or working toward a specific goal, this exercise fits into your routine.
What muscles does the Hammer Curl (forearm focus) work?
Primary
Secondary
Stabilizers
Step-by-step: Hammer Curl (forearm focus)
- 1
Stand with feet shoulder-width apart holding dumbbells at your sides with neutral grip (palms facing each other).
- 2
Keep elbows close to your body throughout the movement.
- 3
Curl the dumbbells up while maintaining the neutral wrist position.
- 4
Focus on squeezing the brachioradialis (thumb-side forearm muscle) throughout.
- 5
Pause at the top when forearms are vertical.
- 6
Lower the weight slowly with control back to the starting position.
What are the best tips for the Hammer Curl (forearm focus)?
Use a slow, controlled tempo to maximize forearm engagement.
Avoid swinging; keep your upper arms stationary.
Squeeze hard at the top to emphasize the brachioradialis.
Can be performed alternating or simultaneously.
Mistakes to watch for on the Hammer Curl (forearm focus)
Using momentum to swing the weights up.
Bouncing or using momentum during the Hammer Curl (forearm focus) takes work away from your Forearms (flexors) and puts your connective tissue at risk. Control the weight through the full range — if you can't, lower the load.
Letting elbows drift forward during the curl.
Letting your elbows drift wide during the Hammer Curl (forearm focus) shifts load onto your shoulder joint instead of your Forearms (flexors). Keep them tucked at about 45 degrees to protect your rotator cuff and keep tension where it belongs.
Rotating wrists during the movement.
A poor grip during the Hammer Curl (forearm focus) limits how much force you can produce and puts your wrists in a weak position. Set your grip before you start the rep, and keep your wrists stacked over your forearms.
Who should do the Hammer Curl (forearm focus)?
All fitness levels. Great for building arm thickness and forearm mass.
How to Program the Hammer Curl (forearm focus)
Lower reps with heavier weight builds raw strength. Your muscles and nervous system adapt to handle more load over time. This range is best for strength-focused goals.
This rep range keeps your muscles under tension long enough to trigger growth. Most people see the best muscle-building results in this zone. It balances strength and muscle size.
Higher reps with lighter weight builds muscular endurance and improves conditioning. This range is good for joint health and building work capacity.
General guideline: 3-4 sets of 10-12 reps for forearm and bicep development. Rest 60-90 seconds.
What are good alternatives to the Hammer Curl (forearm focus)?
Reverse Curl (forearm focus)
Dumbbell Wrist Curl
Cable Wrist Curl
Other Variations
- Cross-body hammer curl
- Rope cable hammer curl
- Incline hammer curl
- Preacher hammer curl
This Exercise Is in Your Plan
MySetPlan picks the right exercises for your goals — like the Hammer Curl (forearm focus) — and builds them into a monthly program. Every set, every rep, planned out.
Take the Free Quiz2-minute quiz · No credit card
Safety Notes
- Start with moderate weight and focus on form.
- Keep wrists neutral to avoid strain.
- Avoid using momentum or body swing.