Age 10 I was 75 pounds, 4 foot 11 inches tall, with large ears. Looked a little like a Cuban spock.
Age 14 I was 230 pounds, 6 foot 7 inches tall, and I had a full beard; not that scraggly nonsense either but a close cut, black as sin, well maintained beard that I wear to this day and a moustache that would shame John Stossel.
The transition made me a favorite target among my peers in the Detroit public school system. After my friend pointed out that being afraid of people half my size was stupid I was able to correct the problem. Bless her heart, a friend will tell you to call the police or stay out of their way, but a true friend will give you the courage to stand up for yourself.
Since then I've lost some weight, done some learning, and discovered the glorious confidence booster that is the modern business suit.