Marching Sit tall on a small or medium-sized stability ball with your feet flat on the floor and hands on the sides of the ball. Keep your abs braced and lift one foot off the ground. Think about bringing your knee to your chest. Once you have raised your knee as high as you can, pause for one second before lowering it again. Switch to the other side. Perform 10 reps on each side. Ball Circles Sit tall on a small or medium-sized stability ball so that your feet are flat on the ground and knees are at about 90 degrees. Put your hands on either side of the ball for balance and move your hips in clockwise circles without twisting your trunk. Start with small circles and progress to larger circles. Perform 20 reps in total before switching directions. Kneeling Panks Start by kneeling on the ground with your forearms on a stability ball and hands together. You should start with your body at about a 45 degree to the ground so that you’re leaning forward slightly. Push the ball away from you with your forearms while keeping your abs tight. Stop when your hands are in front of your eyes and pull the ball back to the starting position. Try to keep your body in a straight line from your knees to your head throughout the movement. When you pull the ball back toward yourself, try to initiate the pull through your abs. Repeat 8-12 times. Crunch Start by lying on a small or medium-sized ball face-up with your feet flat on the floor. The ball should be under your hips and lower back. Cross your arms over your chest and crunch your abs to bring your upper body up. Stop when your body is at about 45 degrees to the ground. Slowly lower yourself to the starting position and repeat 10-15 times. Throughout the exercise, try to keep your neck neutral. It may be helpful to pretend there’s a stick attached from your head to your mid-back that doesn’t let you bend. Side Crunch Start in the same position as you did for the regular crunch. This time, while crunching with your abs, you’re going to add a twist. You can stop the movement when your upper body is at about 45 degrees to the ground. Lower yourself slowly into the start position and repeat 5-8 times on each side.