I don't know how she got to be 173 pounds! We walk almost every night around our block which is 2 miles. She plays sports too. At first i thought oh it's just muscle but face it, the stomach on her is on muscle. Muscle doesn't jiggle like that. I would like it if she would get some of that weight off. How much should she lose? But she doesn't really want to becasue she said that sure she is heavy for her age but she doesn't want to lose any. Please help