I just love thinking about what makes people tick

I love getting dressed up for red carpet events and having my hair and makeup done professionally - that definitely helps with nerves of going down the red carpet.

I carry a golf ball to put under my feet when they get tight, and a Thera-Band for general stretching.

To get the adrenaline pumping between events - or to help me switch off, Jay Z, the Roots and Drake are on my playlist.

It's really important for me to look good before a race. I definitely think if I feel I look good, it makes me feel more confident.

People think the gold medal is yours and they say you're going to win - but they have no idea how hard it is. People aren't doing it negatively - they're mostly lovely and they really do want you to win - but they don't understand the difficulty and intensity of competition.

I wasn't the kind of kid who would get A's without even trying. I had to work to get good grades, but I was very organised about it because I always wanted to do well at everything I did. I'm very competitive.