Performing the: A Step-by-Step Tutorial Cable Curl
Stand up straight and grab the bar with an underhand grip, hands shoulder-width apart, keeping your elbows close to your body.
Slowly curl the bar while keeping your upper arms stationary, continue the movement until your biceps are fully contracted and the bar is at shoulder level.
Hold the contracted position for a second as you squeeze your biceps.
Gradually return to the starting position, resisting the pull of the cable as you lower the bar, to complete one repetition.