Rear delts are quite the elusive muscle to train for most — I probably went 2 years with minimal mind muscle connection for my rear delts. These are the two exercises that allowed me to really develop this: 1. Chest supported rear delt row: easier to load than a rear delt fly so you can recruit more motor units 2. 45° standing cable rear delt flye: aligns your rear delts with the line of pull and allows you to train the rear delts in a stretched positions Another way to think of these exercises