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

How Iridium Programs This

Iridium programs this movement to accumulate volume for the posterior deltoids and rhomboids without adding significant systemic fatigue, often utilizing it when your recovery scores suggest reduced load capacity. If your preferences are set for dynamic warmups, the algorithm frequently places this exercise at the start of upper-body sessions to prime the shoulder girdle. Iridium tracks this specific volume against your maintenance targets to ensure rear shoulder health while respecting strict time constraints.

Form Cues

Stand tall with your core braced and ribs tucked down
Hold the band with hands shoulder-width apart and palms facing down
Initiate the pull by squeezing your shoulder blades together
Keep your arms straight with only a micro-bend in the elbows
Control the eccentric phase as you return your hands to the center

Don't

Don't arch your lower back or flare your ribs as you pull
Don't shrug your shoulders up towards your ears
Don't bend your elbows excessively to turn it into a tricep extension
Don't let the band go completely slack between reps

Common Mistakes

Shrugging the shoulders/upper traps
Flaring the ribcage open
Using momentum to jerk the band open
Bending the elbows too much
Grip width too narrow or too wide

Muscles Worked

This exercise primarily targets the posterior deltoids and the scapular retractors, including the rhomboids and middle trapezius. By isolating these muscles, it helps pull the shoulders back into a neutral position, effectively counterbalancing the tightness often found in the chest and anterior deltoids.