This is one of my favorite Ab exercises. Mostly because it’s challenging but it also targets the upper and lower abs at the same time. Since I was my own photographer it was hard for me to get a great picture but my hands are in the plank/push up position and the lower part of my legs is resting on the ball. Contract your abs and use your legs to roll the ball inward and then back. Repeat 3 sets 10 times.
Stability Ball Ab Pike