Popsugar Health & Fitness Workouts How to Strengthen Your Abs Get Rock-Solid Abs With These 15 Strengthening and Toning Exercises 28 August 2018 by Tamara Pridgett View On One Page Photo 5 of 15 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 5 High Plank Start resting on all fours. With your palms flat, raise up off your knees onto your toes. Keep your hands directly below your shoulders. Contract your abs to keep yourself up and prevent your bottom from sticking up. Remember to keep your belly button pulled in. With your head and spine in line, keep your back flat — don't let it curve. Picture your body as a long, straight board. Previous Next Start Slideshow Trainer TipsBodyweight ExercisesCore ExercisesStrength TrainingWorkoutsAb Exercises