Answer:twice
Explanation:Some teenagers have difficulty keeping up with the energy needs of their bodies and may be underweight. The reasons for this may be that they are growing taller, exercising a lot with sports, are too busy or distracted to eat appropriate meals, or might simply have a high metabolism (the way our body burns calories). Growing during the teen years requires more food energy than at other times of life. Teens can lose weight when they are burning more calories than they are taking in. Some teens grow at a different pace than their siblings or friends, and each teen will experience different periods of fluctuating weight. Your teen may follow a growth pattern similar to your own when you were her age.