My bmi is 18.9 but i still have a chunk of fat on my belly. how do i get rid of it for good?

Sorry,: But there's no way you can have belly fat with a bmi of 18.9. What you probably have is a severe eating disorder and need to see a psychiatrist.

Just be sensible.: The real key to weight loss is to just watch the size of your portions at meals, eat healthy, and exercise regularly. There's no radical diet or exercise plan or pill that will magically give you meaningful and sustained weight loss. The ol' fashioned way is still be best way to lose weight for the long term.