The biceps, or biceps brachii, is a prominent muscle located in the upper arm. It consists of two heads: the long head and the short head. This muscle is primarily responsible for flexing the elbow and rotating the forearm, allowing for movements such as lifting and pulling. Biceps are often associated with strength and fitness, making them a popular focus in weightlifting and bodybuilding. Exercises like bicep curls and pull-ups specifically target this muscle, helping to increase its size and strength. A well-developed biceps can enhance overall arm appearance and functionality.