Purpose of the excercise

Improve shoulder mobility and upper body coordination

Target

Shoulder stiffness / Poor posture / Limited arm movement

Muscles that can be trained

Deltoids / Rhomboids / Trapezius

Muscles that can be stretched

Chest muscles / Upper back muscles

Note

Also known as an arm opening exercise or shoulder mobility exercise.
Helps improve shoulder flexibility, posture, and upper body movement.
Commonly used in rehabilitation, warm-up routines, and mobility training.