Step by step instructions, muscle activation and variants for the Lever Side Seated Single Arm Rear Delt Fly.
A machine rear delt fly performed unilaterally from a side-seated position, isolating the posterior deltoid and upper back. Sitting sideways on the rear delt machine allows a greater range of motion and improved leverage for single-arm work compared to the standard bilateral setup.
Common mistakes content is coming soon.
The Lever Side Seated Single Arm Rear Delt Fly is a foundational movement that builds strength and muscle through controlled, progressive overload. Train it 1 to 2 times per week with 3 to 5 working sets per session, gradually adding weight or reps as form holds up.