Does the reverse grip work the forearms more than a regular curl?

Not in the way most people expect. When competitive bodybuilders curled a cable bar at matched 8-rep-max loads, biceps activity was clearly higher with the palms-up grip than the palms-down grip, and brachioradialis activity was slightly higher too. The reverse curl shifts the share of the work away from the biceps and asks the wrist extensors to hold the wrist, rather than working the brachioradialis harder than a regular curl.

What is the difference between a reverse curl and a hammer curl?

The reverse curl uses a palms-down grip, while the Band Hammer Curl keeps the thumbs up. The hammer grip is stronger and usually easier on the wrists, while the reverse grip uses a lighter load and makes the wrist extensors work harder to keep the wrists straight.

Why does the band curl feel hardest at the top?

A band's tension rises as it stretches, so resistance is lowest with the arms straight and highest near the shoulders. A wider stance or a shorter grip on the band adds tension at the bottom of the curl.

How many sets and reps should I do?

Two to four sets of 10 to 20 reps works well for most people, since bands suit moderate to higher reps. Pick a band that brings you close to failure while the wrists stay straight and the elbows stay at your sides.

Can I do reverse curls with a loop band instead of a tube band with handles?

Yes. Stand on a long loop band and hold the top of the loop with an overhand grip, which works the same muscles but is harder on the grip because there are no handles.

Band Curl (Reverse Grip)

What Is the Band Curl (Reverse Grip)?

Band Curl (Reverse Grip) is an isolation exercise that primarily targets the biceps and forearms, working the brachialis and brachioradialis hardest while the biceps brachii and wrist extensors assist. It is a beginner-level movement performed standing on a resistance band with handles, curling both handles from the thighs to the shoulders with the palms facing down.

Turning the palms down puts the biceps in a weaker pulling position, so more of the elbow flexion falls to the brachialis underneath it and the brachioradialis along the top of the forearm. The wrist extensors also work throughout the set to keep the wrists straight against the band. That makes the reverse curl a common accessory for building thicker-looking forearms and upper arms, for balancing a program heavy in palms-up curling, and for grip-dependent pulling work.

The band changes how the curl feels compared with the Dumbbell Reverse Curl or the Barbell Curl (Reverse Grip). Tension is lightest with the arms straight and rises as the band stretches, so the top half of the curl is the hardest part and the bottom gives little resistance. Widening the stance, choking up on the band or switching to a heavier band raises the load, which makes it easy to scale at home or while traveling.

The overhand grip is weaker than a regular grip, so expect to use a lighter band than for a Band Curl. It suits beginners, home trainees and anyone adding forearm work without extra equipment. People who find the palms-down position uncomfortable on the wrists or outer elbow can start with the Band Hammer Curl, whose thumbs-up grip sits between the regular and reverse curl.

Muscles Worked

MuscleActivation

Brachialis: Primary
Brachioradialis: Primary
Biceps Brachii: High
Extensor Carpi Radialis: Medium
Deltoid: Low
Flexor Carpi Radialis: Low
Flexor Carpi Ulnaris: Low
Rectus Abdominis: Minimal
Upper Trapezius: Minimal

Instructions

Stand on the middle of a resistance band with both feet about hip-width apart, so the band runs under the middle of each foot.
Hold a handle in each hand with an overhand grip, palms facing back toward your thighs and arms straight at your sides.
Stand tall with a slight bend in the knees, chest up and shoulders relaxed down.
Keep your wrists straight, knuckles in line with your forearms, and your upper arms close to your sides.
Bend your elbows to curl the handles up, keeping the palms facing down, until your hands reach shoulder height.
Pause briefly at the top without letting the elbows drift forward.
Lower the handles slowly against the band until your arms are straight again.
Repeat for the desired number of reps, keeping your torso still throughout.

Common Mistakes

Bending the wrists
Letting the wrists fold back or curl forward shifts load onto the wrist joints and outer elbow, so keep the knuckles in line with the forearms throughout.
Elbows drifting forward
Raising the elbows at the top turns part of the curl into a front raise and takes tension off the elbow flexors, so keep the upper arms close to the sides.
Using too heavy a band
The overhand grip is weaker than a regular curl grip, and a band that is too strong forces wrist collapse, body swing or a shortened range.
Swinging the body
Leaning back or bouncing the knees to start each rep moves the work away from the arms and strains the lower back.
Letting the band snap back
Dropping quickly from the top skips the lowering phase and lets the band yank the elbows straight, so lower the handles under control.
Loose footing on the band
A band that sits near the toes or under one foot can slip out mid-rep, so center it under the middle of both feet.

Injuries

Band Curl (Reverse Grip) is a low risk exercise when performed with proper technique. The band's resistance is light at the bottom and the movement places no load on the spine, so the main strain points are the outer elbow and the wrists. The wrist extensors, which attach at the outer elbow, work throughout the set to hold the wrists straight, and letting the wrists bend back or forward adds stress to that area.

Keep the knuckles in line with the forearms, choose a band light enough to finish every rep without the wrists folding, and lower the handles under control rather than letting the band pull the arms down. Check the band and handles for nicks, tears or worn attachments before each session, and make sure the band sits flat and secure under the middle of both feet so it cannot slip out and snap back.

If the overhand grip irritates the wrists or outer elbow, switch to the Band Hammer Curl or use a lighter band. Once the movement is comfortable, progress with a heavier band or a wider stance, or move to the Dumbbell Reverse Curl for a constant load. Stop if you feel sharp or lingering pain on the outside of the elbow, pain in the wrist, or numbness or tingling in the hand.

Overview

Primary Focus: Biceps and forearms
Equipment: Resistance bands
Modality: Strength
Difficulty: Beginner

Alternative Exercises

Frequently Asked Questions

Q: Does the reverse grip work the forearms more than a regular curl?: Not in the way most people expect. When competitive bodybuilders curled a cable bar at matched 8-rep-max loads, biceps activity was clearly higher with the palms-up grip than the palms-down grip, and brachioradialis activity was slightly higher too. The reverse curl shifts the share of the work away from the biceps and asks the wrist extensors to hold the wrist, rather than working the brachioradialis harder than a regular curl.
Q: What is the difference between a reverse curl and a hammer curl?: The reverse curl uses a palms-down grip, while the Band Hammer Curl keeps the thumbs up. The hammer grip is stronger and usually easier on the wrists, while the reverse grip uses a lighter load and makes the wrist extensors work harder to keep the wrists straight.
Q: Why does the band curl feel hardest at the top?: A band's tension rises as it stretches, so resistance is lowest with the arms straight and highest near the shoulders. A wider stance or a shorter grip on the band adds tension at the bottom of the curl.
Q: How many sets and reps should I do?: Two to four sets of 10 to 20 reps works well for most people, since bands suit moderate to higher reps. Pick a band that brings you close to failure while the wrists stay straight and the elbows stay at your sides.
Q: Can I do reverse curls with a loop band instead of a tube band with handles?: Yes. Stand on a long loop band and hold the top of the loop with an overhand grip, which works the same muscles but is harder on the grip because there are no handles.