Stand facing a cable machine with a rope attachment set at about chest height. Grasp the rope with a neutral grip and take a few steps back so there’s tension in the cable. Keep your chest up and core braced. Pull the rope toward your chest in a horizontal motion by driving your elbows outward and squeezing your rear delts. Slowly extend your arms back to the starting position under control and repeat.
Log your cable standing rear delt horizontal row (with rope) sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.