THE man nicknamed 'Lightning' Bolt is not worried about Gay's challenge to his records.

'I have no problem. Everybody wants to be a world record holder. If he breaks it, it's part of the game for me. I'll work to break it back. It's all fun and games,' the triple Olympic gold medallist said.

'I've no fear. I have no fear of any athlete I go against. I compete at my best at all times. I don't worry.' And he insisted that there was plenty more to come from the fastest man on earth.

'I'm not at my peak, I have a little more left in the tank, I have a bit more to go. I'm still trying to get everything together to get that perfect race.' Bolt also hinted that he may compete in the 400 metres in future.

'I think maybe next year I may try it, I think I can maybe run 44 seconds,' he said.

Since Bolt became the fastest man alive, he has maintained his laid-back persona and is in no rush to give up the chicken nuggets that powered him to victory in Beijing.

'I do eat too much fast food maybe. I do like to enjoy myself,' he admitted.

'I try and stay as much down to earth as possible. I like to have a party because I'm young, so I like to enjoy myself also.

'I train six times a week, mostly in the evening hours when the sun goes down. I'm not really a morning person.' But he added: 'I think I was born naturally fast.

'Natural talent takes you just so far, then you've got to put in the work.

'I know what it takes to get to the top. It's all about hard work and dedication. That's what makes me the fastest man in the world.' -- AFP