Fit Quickie: Oblique Crunches for a Slimmer Waist Leave a Comment / Abs & Core, Body Weight Exercises, Demos, Exercises, Fit Quickie, Fitness, Get Fit, Upper Body, Videos When you train your abs, it's important to hit the upper and lower abs and the obliques which help pull in your waistline. Tighten your midsection with Oblique Crunches to slim your waistline and strengthen your core. Share this... Facebook Twitter Pinterest Tumblr Linkedin email