Stubborn fat, whether it be on the thighs or on the lower abs, is a result of alpha receptor distribution. The receptors on those fat cells do not respond to the typical methods such as dieting, cardio, ECA, etc. They are very resistant fat cells which become that way due to factors such as high estrogen levels, yo-yo dieting, and genetics.
The secret lies in blocking the alpha receptors, which prevent fat breakdown. Yohimbine use is the only proven way to do this. Do a search on YOHIMBINE on the board and see how to use it.