The reverse grip barbell curl targets both the biceps and the forearms. By using an overhand grip, this exercise emphasizes the brachialis muscle, enhancing overall arm development and grip strength.

1. Stand with your feet shoulder-width apart, holding a barbell with an overhand grip.
2. Keep your elbows close to your sides and curl the barbell towards your shoulders.
3. Squeeze your biceps at the top of the movement.
4. Slowly lower the barbell back to the starting position.