Primary Muscle Group: Shoulders
Muscle Groups Worked in This Exercise: Deltoideus; upper, middle and posterior parts
Preparation: Sit tall on the ball, keep your back straight and place an exercise band under both feet. Grasp the band in both hands and fully extend your arms beside your hips with your palms facing the ball. Engage your abs.
Breathing: Exhale as you raise your arms, inhale as you lower back to start.
Execution: Raise your arms straight out in front of you, thumbs pointing up, until they are shoulder height. Lower your arms back down to starting position.
Comments: Be careful not to raise your arms any higher than shoulder height.