Ballet-Too fat?

Question:

Ballet-Too fat?

I am 13years old now have started ballet since 4 yrs old.Got fat when i was 10 yrs now im 13 yrs old.Im 140CM and 42 KG.What is my IDEAL weight or should be my ideal weight?I am trying to diet but it doesnt seen to work what should i do?Pls ans for my ideal weight only in KG cause i dont know how to convert LBS or POUNDS to kg...so yah...thanks

Best Answer - Chosen by Asker: Given your information, your BMI (body mass index) is 21.4, which is in the ideal zone for your height. Also, remember that at 13 you're still growing and thus need a bit of extra energy to grow.