Popsugar Fitness Fitness Tips Kayla Itsines's At-Home Beginner Ab Workout This 7-Minute Workout From Kayla Itsines Is All About Abs and Only Requires a Chair December 4, 2019 by Samantha Brodsky View On One Page Photo 1 of 5 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Hover Start on all fours with your toes tucked under, your knees below your hips, and your hands below your shoulders. Engage your core and bring both knees off the ground. Hold this position for 20 seconds. Previous Next Start Slideshow Fitness TipsWorkoutsKayla ItsinesHome WorkoutsAb WorkoutsAb Exercises