World Heavyweight Boxing champion Anthony Joshua says he is learning to become "uncivilised" in the ring.
Joshua told BBC 5 Live Boxing podcast that he is adopting "a gladiator mentality" as he prepares to put his world heavyweight titles on the line.
Joshua adds over the last year he has become tougher and more relentless.
Joshua faces Kubrat Pulev for the WBA, IBF, WBO and IBO world titles this Sunday.
The fight program will start at 7am.
