Primary Muscle Group: Abdominal Obliques
Muscle Groups Worked in This Exercise: Psoas Major, Iliocastalis lumborum, Iliocastalis thoracis
Preparation: Stand holding medicine ball between hands as pictured with elbows bent.
Legs slightly bent and back and head straight up.
Breathing: Breath out on the contraction of the muscle and breath back in on the way back to the start position.
Execution: Twist torso to one side focused on squeezing your oblique area and then rotate to the opposite side to complete the exercise movement.