Popsugar Fitness Body Weight 32 No-Equipment Ab Exercises You Can Do on a Mat Heat Up Your Core With 32 Small-Space, On-the-Floor Ab Moves You Can Do Right on Your Mat 31 March, 2020 by Maggie Ryan View On One Page Photo 26 of 32 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 26 Double Crunch Lie on your back on the floor, raising your arms and legs to a 90-degree angle. Engage your abs to lift both your shoulders and pelvis off the ground. Touch your fingers to your toes. Keeping your core engaged the entire time, slowly lower them back to the starting position to complete one rep. Previous Next Start Slideshow Body WeightBodyweight ExercisesCore ExercisesAb ExercisesWorkouts