How do NFL players get so fast and nimble?

ESPN.com : The Chase

A great article from ESPN about a small town in Florida called Muck City, that has a very successful high school football team. The high school has 28 graduates that have gone on to play in the NFL, including Fred Taylor and Santonio Holmes, and its players are known for their speed.
How did they get so fast?
The surprising answer is that they chase wild rabbits through the burning sugarcane fields. This article by Eric Adelson paints a vivid picture of an unusual subculture that feeds elite athletes into one of America's biggest sports.