Weight is very individual. Some women are naturally slim, others a bit huskier. During puberty, women get a larger amount of fat to make it easier for menstruation to begin. If you exercise regularly (at least a half hour per day) and eat regular meals, rather than constantly snacking, you will probably have the weight that’s right for your body. One indication of what you should weigh is BMI, body mass index, a simple mathematical calculation. If you are uncertain about your weight talk to your school nurse.