You retired as the fastest man in history. What does winning look like to you now?

Winning is finding happiness and fulfilment in what you do – from business to family to giving back.

As a father of three, what have your kids taught you about life?

Patience. I have learned that I need to be patient and teach them things, but also let them learn from their mistakes. If they fall down, they need to be able to get up and try again.

Your chicken-nugget diet at the Beijing Olympics is the stuff of legend. Are you still eating them?

I get asked about eating chicken nuggets in Beijing a lot. The reason I ate so many was to avoid getting stomach problems with food I didn't know. I chose the safe option, but that was not my diet 24/7. I eat quite a healthy diet now.

Sprinting at your level is as much mental as physical. What was going through your head in those final seconds before a race?

This is the part of track and field that I miss the most – walking out onto the track in front of an energetic crowd and millions watching on TV. I lived for those moments. I usually tried to do something to entertain the crowd and then, when the starter called ‘On your marks’, I would just focus on everything my coach told me in training and try to execute the best race possible.

Your career redefined athletics globally – did you feel the weight of that at the time?

No, I embraced it. My initial aim was to win the Olympic Games. When I achieved that, I aimed to do it again in 2012, and then again in 2016. By the end I wanted to retire as a sporting legend.