The 5 Best Outer Biceps Exercises [wp_ad_camp_1] The external biceps bundle, or rather the long head of the biceps brachii, is an important part of the development of the shape of the arms. If the short head is responsible for the peak of the biceps, its thickness, then without the development of the long head, … Continue reading The 5 Best Outer Biceps Exercises, Benefits, Tutorial Routine