This exercise works the forearms.
Stand up straight, grasp a barbell with a palms down grip slightly shoulder width apart.
Slightly bend your elbows.
As you exhale, from the starting position lift the barbell slowly without moving or swinging your torso.
Without pausing at the top, slowly return to the starting position as you inhale.
Do not lift the bar up using your lower back.
This exercise also strengthens the wrist joints so it can improve your bench press results.