Popsugar Health & Fitness Ab Workouts 3-Minute Ab Workout For Runners This Ab Workout For Runners Is 3 Full Minutes of Planking That'll Set Your Core to Max Burn 3 August 2019 by Maggie Ryan View On One Page Photo 4 of 4 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Spiderman Plank (aka Creepy Crawler) In plank, bring your knee to your elbow and then alternate sides. If this is too challenging, just lift your leg open to the side. Continue alternating for 30 seconds. Previous Next Start Slideshow Ab Workouts5-Minute WorkoutsRunningWorkoutsAb ExercisesPopsugar Interviews