Do 3 sets of 15 to 20 reps on each side every time you do the workout.
How to do it: With band still anchored at the same point, turn your body to face one side. Standing with feet slightly wider than hip width, extend your arms straight out in front of your chest, stacking one hand on top of the other (touching both ends of the band together). Brace your abs in tight and rotate your torso away from the anchor point, keeping lower body still as upper body twists. Return to center. That's one rep.