Definition
The triceps brachii is the muscle located on the back of your upper arm, responsible for straightening your elbow. Think of it as the antagonist to your biceps, working in opposition to extend your arm. Unlike the biceps, the triceps has three heads (hence 'tri-') that attach to different points on the shoulder blade and humerus. It's essential for pushing movements and stabilizing the elbow joint. Developing your triceps contributes to overall arm strength and a balanced physique. Strengthening the triceps is important for various activities, from pushing doors open to performing push-ups.