BodyCraft Strength Training System Exercise Manual page 29

External Rotator
Stand beside your machine and adjust the Functional Training Arm to
elbow height. For some, this exercise is more comfortable if you place
a rolled up towel under your upper arm. Grasp the handle, using a
neutral grip, with your outside arm. Rotate your arm, as if it were an
opening door, away from your midsection. Return slowly.
Primary muscles worked: Rear Deltoids (shoulder), Rotator Cuff.
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