Sit or lie chest-supported on a bench facing a cable machine with handles set at upper-chest height. Grab the handles with palms facing in. Pull the handles toward your torso, squeezing your shoulder blades together while keeping your chest pressed into the support. Slowly return to the start with control and repeat for reps.
Log your cable high row with chest support sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.