Day 3: August AB challengeThere are 8 effective ab exercises included in this months challenge. One of the exercises included is the side plank with rotation. The side plank rotation activates the deep abdominal muscles and helps to tighten and shrink your waistline. This exercise can help you improve balance, boost your endurance, and increases core strength.To do this exercise, start in a side plank position, with your right shoulder over your elbow, your body in a straight line, and reach you