Popsugar Fitness Workouts Jillian Michaels Ab Workouts 11 Core Workouts Jillian Michaels Does to Carve Her Enviable Abs November 26, 2018 by Christina Stiehl View On One Page Photo 3 of 11 ADVERTISEMENT () Start Slideshow View this post on Instagram A post shared by Jillian Michaels (@jillianmichaels) on May 23, 2017 at 5:09pm PDT Share This Link Copy ← Use Arrow Keys → 3 Plank Circuit Jillian mixes up traditional planks with these hard-as-hell variations. Previous Next Start Slideshow WorkoutsJillian MichaelsCore ExercisesAb Exercises