The Machine-Powered Rear Wing Opener

Trail Log · Movement Breakdown

Not everyone wants to lie face-down on an incline bench with dumbbells to train their rear delts, and that's perfectly fine — that's what the reverse machine fly is for. It takes the same basic movement pattern and puts it on a machine, which provides stability, consistent resistance, and the ability to focus entirely on the muscle contraction without worrying about balance or form breakdown.

You adjust the machine's handles all the way back, select your weight, and set the seat height so the handles are at shoulder level. You grip the handles with your hands facing inward and sit tall, ready to open your arms like you're about to give the world a very stiff, very controlled hug from behind.

Using a semicircular motion, you reach your hands out to your sides and back, squeezing your rear deltoids at the end of the movement. Keep your arms slightly bent throughout — the work happens at the shoulder joint, not the elbow, and if you start straightening and bending your arms, you've turned a shoulder exercise into an arm exercise, which wasn't the plan. Pause at the back of the movement, feel that rear delt contraction, and slowly return to the starting position.

Machine exercises get a bad reputation from the free-weight purists, but for rear delt training, the machine actually has advantages — it's easier to isolate the target muscle, maintain proper positioning, and push to failure safely. For anyone who struggles to feel their rear delts working during dumbbell flyes, this machine version might be the breakthrough you've been waiting for.