The sun is officially shining down on us. And if the sun is out, the guns are out! When we talk about guns—also known as our arms — we are primarily looking at those biceps. The biceps are made up of a short head and long head, thus the prefix “bi.” When you see someone flex his or her guns, the line in the middle identifies the two different muscles. On the top, you see the short head and the bottom is the long head.
