Popsugar Health & Fitness Workouts Kayla Itsines 14-Minute Workout Work Your Entire Body in 14 Minutes With This Trainer's 4-Move Strengthening Circuit 6 July 2019 by Tamara Pridgett View On One Page Photo 2 of 4 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 2 Reverse Crunch Lying on your back, lift your legs in the air with your knees bent. Place your hands on the floor beside you. Without momentum, use your lower abs to slowly curl the hips off the floor and into your chest. Slowly lower them back to the starting position. This counts as one rep. Complete 20 reps. Previous Next Start Slideshow Kayla Itsines15-Minute WorkoutsStrength TrainingWorkoutsPopsugar Interviews