Take a giant step forward with your right leg to get into a split-squat stance. Bend both knees. Your front foot will remain flat on the floor; support your trailing leg on the ball of your foot. Keep your chest up and extend your arms out to your sides, parallel with the floor while holding your thumbs backward. Now circle your arms backward three times, then circle them forward three times. The circles should be small, as if you were tracing the rim of a salad plate.
Jump to switch foot positions, bringing your left foot forward and right backward, so you are again in a split-squat stance. Repeat the arm circles. That makes two repetitions. Complete 12.