Performing the: A Step-by-Step Tutorial Cable One Arm Decline Chest Fly
Stand sideways to the machine, grab the handle with the hand that's furthest from it, and take a few steps away until your arm is fully extended.
Position your feet shoulder-width apart, slightly bend your knees and lean your body forward slightly, maintaining a straight back.
Keeping your arm slightly bent, pull the handle down and across your body to the opposite side in a sweeping motion, squeezing your chest muscles as you do so.
Slowly return the handle back to the starting position, allowing your chest muscles to stretch, and repeat for the desired number of repetitions before switching to the other side.