what muscles do hammer curls work

Hammer curls are isolation movements that primarily target the bicep muscle. Specifically, they target the long head of the bicep. In addition to the bicep, hammer curls also work the brachialis and brachioradialis muscles. The brachioradialis muscle is a key forearm muscle that is activated during hammer curls, which can help improve grip strength. Overall, hammer curls are a great exercise for building forearm and grip strength, as well as adding mass to your arms.