Stretches arms, strengthen legs, improves balance, increases core strength.
Begin in Mountain Pose.
Jump your feet apart.
Using your stomach muscles, twist your body so one arm swings across the front of your body and your other arms swings across the back of your body.
Twist your body the other direction, and swing your arms so that the arm that was in front of your body swings behind you, and the arm that was behind you swings in front of you.
Repeat this movement so your arms swing smoothly from front to back.
Lower your arms and step your feet back together.