When he was five, he was like most small boys from his home town of Cambridge – he loved to play sports. Then suddenly his life changed when he became very sick with meningitis. Jonnie's parents took him to hospital and he nearly died. The doctors saved his life, but they couldn't save his right leg. He couldn't run around with the other children any more – and he couldn't play football, his favourite sport. In fact, he couldn't do any sports at all.

But the doctors gave him a new, artificial leg. He could walk again, but he wanted to do more than that, so he started dancing and doing other sports. His doctors, his friends and his parents were all surprised that he could do so much. Only 10 months after he lost his leg, he could run, swim and play football again, but running was his best sport.

In 2010, Jonnie started to practise a lot. He wanted to go to the London 2012 Paralympics, the Olympic Games for disabled athletes. Some of the athletes in the Paralympics can't walk, some can't see at all or can't see very well. But in their sports, they can do things that most people can’t.

Jonnie Peacock won gold at the London 2012 Paralympic Games when he was only 19 years old.