This exercise helps to strengthen and tone the external oblique abdominal muscles (your abs that are closest to your hips/waist) This crunch has a higher degree of difficulty  and you want to get your legs at a 45-degree angle raised (roughly) 6” off the floor  and also keeping your upper torso also 6-8” off the floor  (so you are in a wide V position) with a weight in your hands with your arms stretched out  twist to the left with your upper torso and move your weight to the opposite side  keeping your legs in the same position  and bring your arms and torso back to the center