Position a cable on a tower of a cable machine at the highest setting. Attach a straight or V-shaped bar to the cable. Grasp the bar with your hands shoulder width apart and both palms facing down.
Position your elbows at your sides and bend your elbows so your forearms are parallel to the floor.
Slowly straighten your arms to lower the bar to the front of your thighs. Keep your back straight, head up and elbows close to your sides.
Pause for a moment and then slowly bend your arms to raise the bar slightly above the starting position.
Repeat for desired amount of reps.