Dumbbell Reverse Fly
The Dumbbell Reverse Fly is a posterior chain isolation exercise that targets the rear deltoids and upper back muscles to improve shoulder stability and posture. By performing a hip hinge and raising weights laterally, this movement strengthens the often-neglected muscles responsible for retracting the shoulder blades.
Since this standing variation requires a static hip hinge, Iridium analyzes your 7-day workout history to verify your lower back has recovered enough to stabilize the movement. The AI tracks this work specifically against your posterior deltoid volume landmarks to ensure balanced development without exceeding your Maximum Recoverable Volume for small muscle groups.
Form Cues
- Hinge forward at the hips until your torso is nearly parallel to the floor
- Maintain a neutral spine with your core engaged
- Keep a slight, fixed bend in your elbows throughout the movement
- Squeeze your shoulder blades together at the top of the lift
- Control the weight slowly on the descent
- Don't swing your torso to generate momentum
- Don't round your lower back or hunch your shoulders
- Don't lock your elbows completely straight
- Don't lift your head up excessively to look forward
Common Mistakes
- Using excessive weight and momentum
- Rounding the spine
- Bending elbows too much (mimicking a row)
- Lifting the torso upright during the rep
- Shrugging the shoulders towards the ears
Muscles Worked
This exercise primarily targets the posterior deltoids, which are essential for healthy shoulder mechanics and counteracting forward-slumped posture. It also heavily recruits the rhomboids and middle trapezius to retract the scapulae, while the erector spinae work isometrically to stabilize the lower back in the hinged position.
Primary
Secondary
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