Attach a single handle to a low pulley. Stand sideways to the machine and grab the handle with the hand farthest from the cable. Keep your torso upright, core engaged, and a slight bend in your elbow. Raise your arm out to the side in a controlled motion until it reaches shoulder height. Pause briefly at the top, then slowly lower the handle back down while maintaining tension in the cable. Complete all reps on one side before switching arms.
Log your cable one arm lateral raise sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.