Idk about ethinicity, but I have that kind of genetic makeup (and my whole family does). No matter how much and for how long would I overeat - it's possible to put on just a very small amount of "flab" on a lower stomach, but if I try to restrict cals for like a weak, I'm pretty surprised myself at how fast that mini fat is being lost. One thing I've noticed is that when I overeat - I start to feel hot, every time, it pretty much means that my body burns the excess calories through raising body temperature.