Question

If your 13 and your 124 lbs is that normal or do they have to loose weight???

Answer 1

13-year-old girls have an average wight of 45.8kg (101lbs)

So in your case, you're either tall or muscular, but cannot be considered neither fat nor obese - you are healthy, and are not in the need of loosing weight.

Hope it helped,

BioTeacher101

Answer 2

Your perfect! Your weight is just right! Stay in the 20s and you won't have to gain or lose weight.