Try this exercise called the Pullover to strengthen your core and arms. Lie face up on the floor with your knees bent and your feet flat on the floor. Extend your arms overhead with a three- to five-pound weight in each hand. Contract your abdominal muscles and slowly lift your head, shoulders and back off the floor while simultaneously bringing your arms forward in an arc towards your knees. Hold for a second, then reverse to the starting position. Aim for three sets of 8-12 reps.
To make this pose a bit harder, just add a chest press. With your upper body lifted and arms in front of you, bend your elbows and lower the dumbbells toward your chest, then straighten your arms before returning to the starting position.
To make it easier, keep your head on the floor as you raise the dumbbells in an arc and bring them down to the floor so that your arms rest at your sides. Reverse to start.


