Build the Workhorse of Elbow Flexion for Bigger “Biceps”

supination of the forearm.  But the brachialis is the workhorse of elbow flexion and if it is underdeveloped your biceps will lack a jaw-dropping peak. Eccentric/Isometric Hammer Curls are a game-changing exercise for brachialis/elbow flexor development. Try them and follow the instructions on this video.   Filmed at: Apparel from: