Exercise movement reviewed by:Marie Braga, PT, DPT, CSCS

How Iridium Programs This

Iridium monitors fatigue for the posterior deltoid separately from the lats, using your 7-day history of compound pulling movements to determine if you have the recovery capacity for specific isolation work. The AI typically programs this exercise later in your session, adjusting volume limits to target hypertrophy without pushing this smaller muscle group past its Maximum Recoverable Volume.

Form Cues

Hinge at your hips until your torso is nearly parallel to the floor.
Maintain a neutral spine with your core braced tightly.
Keep a slight, fixed bend in your elbows throughout the entire arc.
Squeeze your shoulder blades together firmly at the top of the movement.
Control the descent slowly to resist gravity.

Don't

Don't swing your torso upward to generate momentum.
Don't shrug your shoulders up toward your ears.
Don't round your lower back or let your chest collapse.
Don't straighten your arms completely or lock your elbows.
Don't let the weights drop quickly during the lowering phase.

Common Mistakes

Using excessive momentum to swing weights
Standing too upright during the set
Bending elbows too much (mimicking a row)
Rounding the spine (kyphosis)
Leading with the hands instead of elbows

Muscles Worked

This exercise primarily isolates the posterior deltoids, rhomboids, and middle trapezius, which are essential for scapular retraction and posture correction. Secondary engagement occurs in the upper trapezius and forearms, while the spinal erectors and core work isometrically to stabilize the bent-over position.