The sports-science series Miracle Body uses cuttingedge video technology and scientific techniques to probe the mysteries of top athletes’ astonishing physical abilities. This episode features the fastest man in history: Jamaican sprinter Usain Bolt. Bolt submitted to an unprecedented full-body scientific analysis that investigated the secret of his almost-superhuman speed. The results revealed an unorthodox running form that overturned conventional sports-science wisdom. Bolt’s running form is the result of a genetic spinal curvature, and this is what makes his incredible quickness possible. Medical researchers noticed Bolt’s spinal curvature and realized it was the reason for his unusual running form. The result is the astonishing story of how Bolt had to battle his own body to become the world’s fastest man.