Popsugar Health & Fitness Trainer Tips 10-Minute, At-Home Ab Workout From The Sculpt Society This 10-Minute Ab Workout, Done Entirely in a Plank Position, Will Transform Your Core 20 November 2019 by Colleen Travers View On One Page Photo 1 of 4 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Knee Pull and Cross Body Start in a plank position with sliders or towels under your feet. Bend and slide your right knee into your chest and hold for one to two seconds; slide the leg across your body, as shown. Do eight to 12 reps before switching legs. Previous Next Start Slideshow Trainer TipsHome WorkoutsAb Workouts10-Minute WorkoutsStrength TrainingWorkoutsAb Exercises