Back Fist

Stand with knees slightly bent, feet in a fighter’s stance one foot forward (start with left), elbows bent; bring right fist near face in a blocking position. Twist at waist to the right, bringing left fist to the right and down, straightening left arm. Keeping arm straight, rotate upper body to the left while swinging left arm back beyond left side of body. Do 10 reps, keeping arm straight and long. Switch sides and repeat.