Performing the: A Step-by-Step Tutorial Cable Lying Biceps Curl
Grasp the cable bar with an underhand grip (palms facing upward) at shoulder width, while keeping your arms fully extended.
Slowly curl the bar towards your chest while keeping your elbows stationary, exhale as you perform this movement and hold the contraction at the top for a second.
Gradually return the bar back to the initial position as you breathe in.
Repeat this movement for the recommended amount of repetitions.