What are the benefits and proper technique for performing barbell drag curls?

The benefits of barbell drag curls include targeting the biceps effectively and improving arm strength. To perform them properly, stand with feet shoulder-width apart, hold a barbell with an underhand grip, and keep elbows close to the body while curling the barbell up towards the chest. Focus on controlled movements and squeezing the biceps at the top of the movement for maximum effectiveness.