AB Work on the Exercise Ball: Love the exercise ball for abdominal exercises. These are a few of my favorites. I do various abdominal exercises once a week, sometimes 2x a week. All week long, a lot of my lifting exercises that I do engage my abs that is why I don't specifically train abs very often. Abs and VISIBLE abs are very dependent on our DIETS!
I usually do 3 rounds of each exercise for 15-20 reps. Videos are on the way!