The triceps is a muscle on the back of the upper arm that contributes significantly more to your upper arm size than your biceps.The best triceps exercises are pushing movements that heavily involve the triceps and allow you to safely move heavy loads and best improve your strength.The best way to build a great pair of triceps is to get as strong as possible on a handful of key exercises including the close-grip bench press, dip, and dumbbell overhead triceps extension.