Primary Muscle Group: Upper back
Muscle Groups Worked in This Exercise: Deltoideus, Brachialis and Trapezius
Preparation: Stand tall with your feet directly underneath your hips. Take a step forward with your right leg. Place the ball under your right thigh, exhale and bend your right leg into a deep lunge.
Breathing: Exhale as you sink into the lunge and inhale as you left your back heel.
Execution: Once you are in the lunge position with the ball under your thigh, inhale and lift your left heel (or back foot) and move it inward at a 45 degree angle. Grasp one end of the band in your left hand and rest your hand along the outer portion of your left thigh. Grasp the other end of the band in your right hand and place that hand near your left hipbone. Exhale and raise that hand way overhead. Repeat on other side.
Comments: This is a combination move; you'll do a lunge over the ball while simultaneously raising your hand overhead.