Biceps curl should be named arm curls as the curling requires contraction of biceps, brachialis muscles in addition to brachioradialis muscle of the forearms. (exercisegoals.com)
Since this exercise actually is working brachioradialis against gravity (the dumbbell is weighing me down, against gravity, not side to the side), it's only adding to the muscle imbalances I may already be experiencing. (truthaboutabs.com)
Concentration curls will give you an amazing pump by limiting your range of motion and targeting the brachialis as primary mover and the biceps brachii and brachioradialis as supporting muscles. (fitnessandpower.com)