Reverse Fly Posterior Deltoid with Machine
Adjust the seat so your chest is against the pad and your arms can reach the handles comfortably. Make sure your chest is stable and centered.
Set the weight to a light-moderate level to start. Reverse flyes work the smaller rear deltoid muscles, so you don't need as much weight as for other exercises.
Sit up straight with chest pressed against the pad. Keep your torso stationary and avoid arching your back.
Grab the handles with palms facing down and arms extended but with a slight bend at the elbows.
Initiate the movement by pulling your shoulders back and squeezing your shoulder blades together. Focus on moving the arms, not the torso.
In a controlled motion, bring the handles out and backward in an arc until your arms are parallel to the floor with a slight bend in the elbows.
Slowly return to the starting position without letting your shoulders or arms relax too much. Keep tension on the rear delts.
Breathe out as you pull back, breathe in as you return to the starting position.
Keep your neck and head aligned with your back throughout the exercise. Avoid drooping your chin.
Make sure to move your shoulders through their full range of motion in a controlled way. Don't jerk or swing the weights.
Squeeze your shoulder blades at the peak contraction for maximum muscle activation.