Popsugar Fitness Workouts Waist Exercises Here's How to Work and Tone Your Waist May 10, 2019 by Susi May View On One Page Photo 2 of 31 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 2 Seated Russian Twist Sit on the ground with your knees bent, pull your abs to your spine, and lean back a few inches while keeping your back straight. Hold your hand at your chest, and twist your torso to the right, then to the left to complete one rep. Continue twisting from side to side. Previous Next Start Slideshow WorkoutsStrength TrainingAb Exercises