Don't eat too much food containing hormones at this time.
Like fried food, fast food and so on.
It's best not to eat at all ~
Eat more fruits and vegetables in a healthy diet, so you don't have to go on a diet.
Do more outdoor sports at this age.
Sometimes the size depends on heredity ~
You can do more stretching exercises ~
This can also help bone development.
Don't feel inferior.
Everything will get better gradually.