Most people recognize a bodybuilder by his muscular arms. The arms are usually the first muscle people notice. If your arms are developed then you have a good start on your bodybuilding career.
The main muscles of the upper arms are the bicep and tricep. Let’s first talk about the bicep.
The bicep is a two headed muscle, having two tendons of origin and a single tendon of insertion. It is primarily a muscle of the elbow joint. The two heads of the bicep converge to a common tendon of insertion. They have a common action at the elbow joint.