OVER 9000
it is according to your height
Do they really need to gain weight? Maybe build muscle, instead of hitting the candy. Ask your doctor.
by a doctor probably but at that age its perfectly normal because they're still growing, and it also depends on the boy's height.
you have hit puberty..... its normal.
Wear something sexy that reveals your figure.
Its called a BMI [ body mass index] for a 13yr. old 5'8 kid the average weight you should go to: http://www.nhlbisupport.com/bmi/
287 pounds!
I am 13 5ft 7in and my weight is 180
Weight is worked out on height not age.
130 pounds
like 100 lbs