He started running track at the age of 12 but didnt start hard core traning until he was 17 years of age.
Chicken Nuggets Source: Usain Bolt himself!!
Usain Bolt started the Olympics in 2004
He had to do allot running training such as running 100/200 meters
With his legs.
A combination of genetics, training and motivation.
he watced tv and ate chips...
when he was 14