This five-part move will help you achieve a trim and slim waist. Crunches only work on the top muscles of your core, but this move gets down to the deepest layer of muscles as well as the sides of your abdomen called obliques. Repeat this move at least 3 times a week for noticeable results.
How to do it: Begin by sitting on your mat with knees bent and feet flat on the floor. Inhale and engage your abs as you lift your legs up—calves should be parallel to the mat with knees still bent. Tilt your torso back so it's about halfway between the floor and upright; balance on your sitting bones. (See top image)