By doing this exercise in an incline position you get ... muscle underneath the biceps which aids elbow flexion) and the brachioradialis (one of forearm muscles that support elbow flexion).

Pain in the brachioradialis can come from overuse, such as repetitive activities like hammering, which can lead to strain or tendinitis. To strengthen it, try exercises like hammer curls ...

They also target the brachioradialis, a muscle in the forearm. Bicep curl vs hammer curl: benefits A great thing about both ...