Primary Muscle Group: Upper back and shoulders
Muscle Groups Worked in This Exercise: Deltoideus, anterior and middle parts, Trapezius, Superior, middle and inferior parts
Preparation: Sit on the ball and place the exercise band under both feet. Grasp the ends of the band and bend your elbows so that your hands are in front of your shoulders with your palms facing forward.
Breathing: Exhale to raise your arms, inhale to lower them to start.
Execution: Exhale and raise your hands above your head. Now, keep your right arm extended as you inhale and lower the left arm. Exhale as you raise your left hand over your head and inhale as your lower the right. You will have one arm extended overhead at all times. Remember to keep your shoulders relaxed and down. Inhale and lower back to start.
Comments: Because you're lowering one arm at a time, you'll work your shoulders twice as hard.