Popsugar Fitness Workouts Ab Exercises That Are Better Than Crunches 30+ Ab Exercises That Are Better Than Crunches June 24, 2018 by Tamara Pridgett View On One Page Photo 16 of 38 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 16 High Knees Hold your hands at waist level. Hop the right knee up toward your hands, then quickly switch legs and hop the left knee up. This counts as one rep. Previous Next Start Slideshow WorkoutsStrength TrainingAb WorkoutsCore ExercisesTrainer TipsAb Exercises