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

How Iridium Programs This

Iridium programs this drill when your 7-day workout history shows high accumulated volume in the rhomboids and rear delts that warrants targeted recovery work. Since this is a time-based mobility exercise, the AI tracks duration rather than load and ensures the activity does not count toward your Maximum Recoverable Volume limits. This allows you to address local muscle fatigue without dipping into your systemic recovery reserves.

Form Cues

Place the ball directly on the muscle belly of the rear shoulder, avoiding the bone
Lean your body weight into the wall or floor to control the pressure intensity
Move your arm slowly across your body or overhead to pin and stretch the tissue
Breathe deeply and consistently to encourage the nervous system to relax the muscle
Hold pressure on tender spots for at least 30 seconds until the tension releases

Don't

Don't roll directly over the spine, shoulder blade edges, or shoulder joint
Don't tense up or hold your breath when you find a trigger point
Don't move the ball quickly back and forth like you are sawing wood
Don't apply so much pressure that you feel numbness or sharp, shooting pain

Common Mistakes

Rolling over the scapula bone
Moving too fast
Tensing the target muscle
Holding breath due to pain
Insufficient time under tension

Muscles Worked

This technique primarily targets the posterior deltoid and the intricate muscles of the rotator cuff, which often become tight from poor posture or heavy pressing. It also addresses tension in the rhomboids and lateral deltoids, helping to restore proper scapular mechanics and reduce the risk of shoulder impingement.