Stand with good posture, feet shoulder-width apart.

Lean forward with arm raised up but below shoulder height and elbow bent to 90 degrees.

Push arm straight out in front against resistance.

Return to starting position in a slow and controlled manner.

Repeat as prescribed.

Repeat on opposite side.

Will help:

Rotator Cuff injuries

Long biceps injuries

Post-op Shoulder rehab

Pectoral muscle tear

Scapular control