For a double arm rear fly with toning tube (rotator cuff) take a toning tube and lock its center in an unmovable place. Position yourself in front of the tube, so far that the tube is resistant but still flexible. Stand tall with your shoulders and legs spread wide and hold to that posture. Next, with a tall torso bent you forward; bring a slight bend in your knees and your hips out. Grab the handles of the tube in both hands and elbows locked in. keep your head straight and facing forward. Now, pull the tube and push your arms and up as far as they can comfortably go. Pull at least 15 times for a powerful session of a double arm rear fly with toning tube (rotator cuff).
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