During adolescence, the heart in size.

The heart increases in size. While you're a child, your heart is a lot smaller than it'll be as an adult size. Your heart increases because as you grow, your body and brain increase. If you were an adult carrying the heart of a 5 year old, your heart wouldn't be able to supply the amount of blood your body needs to every part of it, most importantly, the brain.

What are the options?