Popsugar Fitness Workouts Best Bodyweight Ab Exercises The 5 Best Bodyweight Ab Exercises — All in 1 Workout June 22, 2018 by Jenny Sugar View On One Page Photo 4 of 5 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Side-Plank Crunch Begin in a side elbow plank with your left elbow down and your right hand behind your head. Keeping your torso stable and your waist lifted, bring your right leg up toward your shoulder to lightly tap your right elbow. Lengthen your right leg back to the starting position to complete one rep. Do as many reps as you can in 30 seconds and then switch sides for another 30 seconds. Previous Next Start Slideshow WorkoutsStrength TrainingBodyweight WorkoutsAb WorkoutsIntermediate Workouts5-Minute Workouts