Why does Usain Bolt run so fast

Taken from the feature documentary WHY DO JAMAICANS RUN SO FAST . With Usain Bolt, Asafa Powell, ShellyAnn Fraser, Melaine Walker and all the gold medals of Beijing 2008. Producer: Nando Garcia Guereta (Nice Time). Director: Miquel Galofré. Script: Laura Carulla. You can watch it all (62 minutes) at: