Learn the bent-over cable rear delt fly: push your hips back, bring your arms forward until they line up with your ears, and pause at the top. A pronated grip with knuckles facing forward hits the rear delts harder.
We can enjoy this one because he's not going to get injured, but he looks like he's masturbating. So when we do readouts against opposite hand to opposite cable, so I'm going to draw my hips back and out. As I come up, I'm actually going to come forward towards my ears. I'm here in line with my ears, and I always like and instruct people to do a little pause at the top so you're really getting that peak contraction. If I want to move it into a pronated position where I'm showing you my knuckles, now this is really working readout. Once I move into this pronated position, it's nothing but readout.