Muscle Group: Shoulders
Bent-Over Cross Cable Laterals develop the rear deltoids by isolating and flexing the rear deltoid when reaching the top position of the cable lateral movement. This exercise is great for posture correction since it helps pull your shoulders back.
Lean forward until your torso is parallel to the floor, grab a handle attached to a floor-level pulley so that your arm is fully extended across the front of your body.
Making sure that your body stays still, pull the handle across and up until your arm is fully extended to the side at about shoulder height.
Flex your rear delt really hard at the top for a great peak contraction. Let the weight go back to the starting position resisting all the way.