Towel Standing External Slide Rotation

Stand tall beside a smooth surface or box with a folded towel placed underneath your forearm.

Bend your elbow to ninety degrees, keeping your upper arm gently tucked against your side and your palm facing inward.

Keep your torso steady and slowly slide your forearm outward away from your midline.

Pause for a brief moment when you feel your shoulder rotate outward fully.

Control the motion as you slide your arm back to the starting position.