This is always my prime area after each baby (and I'm working on losing the final 12 right now) but some information I found last time when I got to my goal weight, but still had the lower ab pooch seemed to make a difference.
One was an article that Paula Z included in her monthly newsletter (she may have an archive at
www.exercisevideoreviews.com) by a man who had to a presentation at some fitness gathering on losing lower belly fat and he said that he thought he would do research and go deliver the best exercises for the lower ab. But what he found (and presented) was information stating that foods with chemicals and preservatives contribute to fat deposits in the lower ab either developing or not leaving. So that's something to consider with clean eating.
The other was a post at the old FIRM forum on someone finally finding the answer to getting rid of the lower ab fat. She read in "Peak Performance Fitness" that during all exercises (especially ab work) you must "zip" up your abs, which means to suck them in from the lowest part up to the top like you would if you were lying down on your bed trying to zip up a pair of really tight pants (I know I've done this before
and the visual really works). So she said that she started doing this in her workouts and throughout the day to continually train her transverse abdominal muscles to contract instead of pooch out. This worked wonders for me when I was at that point of my lower ab being the only area left that needed work. At first I was a little too enthusiastic and got sore glute muscles from contracting so instensely
, but it became a challenge to do this whenever I was sitting at the computer, driving the car, standing and cooking in the kitchen, etc.
But I add these to what everyone else has said -- varied intense workouts, clean eating, yoga/pilates, a bit of everything to combat this stubborn area!