15. Ever since you were a baby, you have been growing. But your body usually grows very fast in some certain periods.
During the first year of your life, you may grow up to 10 inches (英寸). (1) In fact, when you were born, your body had a programmed (设定好的) height and size it wanted to reach. If you look at the heights of your parents, aunts, uncles, siblings (兄弟姐妹) and grandparents, you can learn about how tall you might be when you've all grown up.
Around the ages of 8 to 13 in girls and 10 to 15 in boys, children grow more quickly. (2) And it is called adolescence (青春期). Often, you will see girls get taller than boys in late elementary school, and boys catch up and usually pass them in middle school and high school.
(3) Your bones, your muscles, and your whole body have to get used to getting taller and bigger. You might feel clumsy (笨拙的), your voice might change, and you might feel different. All of these things are a natural part of growing up and becoming adults.
(4) But boys will finish growing between the ages of 16 and 18. Some boys and girls finish growing at different times, because everyone is different.
It is very important to exercise enough, to eat properly, and to sleep enough when you are growing. Most children should be getting 10 to 12 hours of sleep per night. (5) Help your body grow by doing the right things!
A. Are you getting enough?
B. Then do you know why your body grows?
C. This is because boys and girls are growing up to be adults.
D. Most girls will finish growing between the ages of 15 and 16.
E. At that time, you were so small, but you grew so quickly.
F. It is very normal to feel uncomfortable when you are growing quickly.