Popsugar Fitness Workouts Bodyweight Workout For Legs and Abs 20-Minute Legs + Abs Bodyweight Workout September 18, 2016 by Susi May View On One Page Photo 4 of 6 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Crunchy Frog Reps: 10 Begin sitting, balanced just behind your sitz bones, rock back slightly to lift your feet off the floor; gently pull your knees to your chest. Release your knees to extend your legs as you roll back, keeping your shoulder blades off the matt, opening your arms to the sides Inhale and return to the starting position to complete one rep. Previous Next Start Slideshow WorkoutsStrength TrainingBodyweight WorkoutsIntermediate WorkoutsFull-Body Workouts20-Minute Workouts