The proper weight is based on BMI--Body mass Index. It is based on Height and Weight.
Yes
No, actually for a 16 year old that's quite underweight. But on the other hand, it all depends on your height, but in general that is quite underwight.
no, an average wait for a twelve year old would be about 85-90, so i believe you are underweight
no your not underweight you about the right size
It depens on your height. Normally yes, but it mostly depends on how tall you are
Yes you would because a 12 year old girl should weigh in around 80-100.
91 pounds is not under weight for a 12 year old girl who is 4 foot nine.
Yes, you are obviously underweight.
that's underweight. !
You are already underweight in relation to your height. You do not need to lose weight.
when they are at least 10lbs under 84lbs
depending on your height that can be extremely underweight! if you are 5'0 lets say that is extremely underweight but if you are 4'5 that is ok.