Looking for the best oblique exercises or an oblique workout for a small, toned waist? If so you're in the right place. Lots of ladies are trying to get an itty bitty waist and flat abs these days... which is why waist training was all the rage. But as I've already explained, waist trainers only 'work' because they force you to contract your abs in tight and it's the contraction that helps you get a small, snatched waist... not the waist trainer. The waist trainer just forces the contraction. But you can use oblique exercise to contract the oblique muscles.