The resistance band alternating front lateral raise is great for strengthening your shoulder and upper back muscles it helps build strength in your rear deltoids and upper body. The alternating single arm movement allows you to isolate one arm at a time for better results. This exercise also improves shoulder mobility. Learn more about properly executing this exercise with the video above.
Regression
Make this exercise easier by moving your feet closer together on the Toner, or using just one foot, to decrease the amount of tension on the Slastix.
Progression
Make this movement more challenging by placing both feet on the Toner, to increase the tension on the Slastix.