Target Each Triceps Head for Massive Arms

The triceps make up two-thirds of the mass of your upper arm. If the tape measure isn’t moving like you hoped, make sure you aren’t neglecting them. The term triceps means three heads: the medial, the lateral, and the long head. The long head’s origin is on the scapula, or shoulder blade. The origins of the medial and lateral heads are on the humerus. The origin of the long head allows you to stretch it by raising your arm above your head. The medial and lateral heads do not st