Travis Miller is chief executive of the iPartners investment platform. He lives in Sydney.

First memory of boxing?
Watching Mike Tyson fight, which was very different to my first experience of boxing. As a 17-year-old, after being drafted to play AFL for Fitzroy Football Club, I was light and unfit relative to the older, more experienced, players, so I decided to give boxing a go in a dodgy little place in Melbourne’s Moonee Ponds, to build muscle, strength and fitness. I got in the ring for a sparring session on the first day. I thought I did OK for a first session, but to be honest I was pretty much a human punching bag for the other bloke. Even with that, I enjoyed the sparring. It was a challenge, and while I improved a lot with training, I quickly realised I had a lot of work to do on my technique and fitness if I wanted to be competitive.