A lot of younger people think that the little flab they have on their arms, butt, tummy, thigh or anywhere else make them fat. Please understand that you probably are not fat. Instead, you have no muscle so everything seems flabby, and you probably don't do much energetic activities. To get rid of these areas (my stomach is my bad spot) you should probably gain muscle mass instead of lose "weight" in these areas. Exercise in any for is going to give you more muscle, the muscle is going to use up more carbs and give you a better, firmer, body shape.
If you are one of those people who think you are a little too chub in a few spots, PLEASE get up and start moving and you will see results. >^.^<