Bicep curls target and strengthen the biceps muscles, enhancing arm definition and strength. Triceps overhead extensions isolate and develop the triceps, contributing to overall arm size and power. Hammer curls work the biceps and forearms, promoting grip strength and balanced arm development. Dumbbell kickbacks engage the triceps, aiding in toning and sculpting the back of the arms. Together, these exercises provide a well-rounded arm workout for improved aesthetics and functional strength.