I'm coming to the end of a fatloss diet. I plan to move to a mass diet next. I do HIIT and resisance trainng 5 days a week. Two years ago I had a beer belly - today its no more! However I greatly need to tighten my midsection. Crunches dont seem to do the trick. I am very dedicated to finishing my goal. What can I do to firm up my front and side abs? I can pinch about an inch and a half on the front and sides. Any help is appreciated.