Top sprinter Usain Bolt is set to swap his running shoes for horseshoes as he prepares for his latest challenge - competing in the 2014 Kentucky Derby.
The 26-year-old Jamaican athlete has undergone a brain-swap operation with a young thoroughbred named Silverdust, and is now living as a horse on a farm in Kansas.
Says Bolt: "After my success in the London Olympics last year I thought the time was ripe for a new challenge. I'm still getting used to the taste of hay, but I've made friends with all the other horses on the farm - and I'm not afraid to admit that my sex life has improved considerably."
