Popsugar Health & Fitness Core Exercises Jillian Michaels Ab Workouts Holy Abs! 11 Workout Videos That Show How Jillian Michaels Carves Her Core 30 October 2018 by Christina Stiehl View On One Page Photo 2 of 11 ADVERTISEMENT () Start Slideshow View this post on Instagram A post shared by Jillian Michaels (@jillianmichaels) on Jan 24, 2018 at 8:05am PST Share This Link Copy ← Use Arrow Keys → 2 Core Challenge This core challenge will strenthen your middle and also get your heart rate up. Previous Next Start Slideshow Core ExercisesWorkoutsAb ExercisesJillian Michaels