When you're young, you have the youth spirit. You are so on fire and you want to do things your way. When your young, you are basically so fearless and strong. But when you are old, those characteristics slowly fades... and basically your body will too. You won't have the strength that you used to have, but then you will have the wisdom and deep knowledge to comprehend and weigh things in proper and just order. I hope I helped! :)