Popsugar Fitness Workouts Total-Body Toning Workout Here's a 5-Move, 5-Minute Total-Body Strength and Core Workout April 24, 2017 by Dominique Michelle Astorino View On One Page Photo 5 of 5 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 5 Skull Crusher Ab Combo Begin on your back with legs and arms straight up. As you inhale, lower your legs halfway down while you bend your arms at the elbows. Exhale to bring your arms and legs back up. Modification: Bend knees into tabletop position. Previous Next Start Slideshow WorkoutsBodyweight ExercisesPilates