1
Stand facing a cable machine with feet shoulder-width apart, knees slightly bent, and core engaged. Position yourself at arm's length from the machine with a neutral spine and shoulders back.
2
Grasp the cable handle with a supinated grip (palms facing upward) at approximately hip level. Keep your elbows tucked close to your torso and maintain a slight bend in the elbow to start.
3
Slowly extend your arm forward and away from the machine in a controlled manner, allowing the cable to pull your arm straight. Maintain tension on the biceps throughout the movement and keep your elbow position stable.
4
Using biceps contraction, curl your arm back toward your body by flexing the elbow, pulling the cable handle back to the starting position near your torso. Squeeze the biceps at the top of the movement before returning to the extended position.