Obliques Roll Back
This is one of my favorite exercises because it works your abs, it feels good, and it is fun to do!
Start by sitting tall with your legs about hip distance apart and knees bent. Reach your arms over you legs, keeping your shoulders down and back.
Before you move, inhale. On your exhale, pull you belly in and tilt your pelvis back and roll half way back away from your legs. At the same time, rotate your shoulders to one side and reach the arm on that side down and back as if reaching to the back corner of the room.
As you inhale, keep your abs pulled in as you rotate back to center coming back to your sitting tall position while you bring your arm forward.
Repeat on the other side.
Perform 3-5 repetitions in each direction.