I train for at least two hours, three times a day - weights, bench-press, push-ups, running, sparring, boxing sessions - so I must be burning off a lot of calories. But I don't weigh myself too often - just once every day.
When I was young, I used to watch videos of Ali boxing, with my dad. It set me on the road. I wanted to be like Ali. I wanted to have my own Nicki shuffle and everything.
One girl said when I won my gold that was what inspired her to do boxing. She was only 12, and that is the same age I was when I first started.
When The Queen invited the Olympians to the Palace, I was first in line to speak to her. She said she watched the Games and how happy she was, how impressed she was with the boxing. She told me she'd watched my fight and enjoyed it. I didn't realise the effect I'd had on the whole country.
At the 2012 Olympics, there was a nutritionist in the food hall telling us, 'Eat that. And eat that.' After winning my gold, I went to McDonald's for chicken nuggets and a strawberry milkshake, but that was just for the hell of it. I don't feel hungry after a match, to be honest.
Boxing is like chess. You encourage your opponent to make mistakes so you can capitalise on it. People think you get in the ring and see the red mist, but it's not about aggression. Avoiding getting knocked out is tactical.