I joined the swim team when I was 12, and I was the worst kid in the pool - I was put with a group of 7-year-olds. Lance Armstrong
In 'Tarahumara' land, there was no crime, war or theft. There was no corruption, obesity, drug addiction, greed, wife-beating, child abuse, heart disease, high blood pressure, or carbon emissions. They didn't get diabetes, or depressed, or even old: 50-year-olds outran teenagers. Christopher McDougall
The thing is, it's not good anyway for eight-year-olds to be out there playing tennis tournaments so soon in their lives. But when I did get to play in a tournament, when I was nine, I was overjoyed. Venus Williams
When I was 12 years old, I was hanging out with 23-year-olds. I was into cartoons and Pokemon, and they're all talking about girls. It was a strange way to grow up. Shaun White