Popsugar Health & Fitness Beginner Workouts Bodyweight Ab Workout 6-Minute Gut-Busting Bodyweight Ab Workout 17 June 2018 by Jenny Sugar View On One Page Photo 2 of 6 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 2 Reverse Crunch Lie on your back on the floor. Place your hands on the floor beside you. Bring the knees in toward the chest with your feet together. Use your abs to slowly curl the hips off the floor and into your chest, and then slowly lower them back to the starting position to complete one. Repeat for 30 seconds. Don't swing your legs to create momentum; use your abs to control your movement. Previous Next Start Slideshow Beginner WorkoutsBodyweight WorkoutsAb WorkoutsStrength TrainingWorkoutsAb Exercises