Nowadays, a thin girl is a beautiful girl. So how do you lose weight? Thank you for your answer! Unless your weight is causing health problems, I don't see any reason to lose weight. Regardless, I believe one way to calculate how many calories you should be eating in a day is... I'm sorry this uses U.S. units. Female: 655 + (4.3 x weight in lbs.) + (4.7 x height in inches) - (4.7 x age in years) So, for example, say i'm 120 pounds, 63 inches and 20 years of age. That would mean... 655 + (4.3 x 120) + (4.7 x 63) - (4.7x 20)

Yanmin is right. Diet and exercise. Make small, gradual changes in your diet toward healthier foods, and slowly improve your fitness with cardio and strength training.

eat less and exercise more ^^