Usain Bolt explains why he is so fast. Listen to what he has to say.

Bolt of Jamaica starts in the men's 200 metres quarter-final heats during the world athletics championships at the Olympic stadium in Berlin
Quick Reaction.
Drive.
Driving.
Driving.
Keep Driving.
Knees up.
Shoulders Down.
Dorsiflex.
Toes up.
Plant & Drive.
Focus.
Stay Focused.

[youtube]http://youtu.be/JAlpH911YKU[/youtube]