1200 calories a day is not enough for teens, especially active ones! Eating too little will slow down your metabolism and make you more likely to gain weight than lose/maintain it.
Be sure to follow your nutrition plan given by sparkTeens (a minimum of 1,800 calories per day).
And don't be so hard on yourself. No one has the perfect body, and even though YOU might think you look flabby, others probably do not. You might not be losing weight b/c you're already at a healthy weight. But eating right and exercising (especially strength and cardio) can help you reshape and tone up what you do have, even if the scale doesn't change.
