Oleksandr Usyk has bulked up as he gets set to fight Anthony Joshua for the Brit's heavyweight titles on Saturday.
Ukraine's mandatory challenger will attempt to cause an upset and prize away Joshua's WBA, IBF and WBO belts at the Tottenham Hotspur Stadium.
The 34-year-old had questions raised about his capabilities at the heavyweight division after his last fight with Derek Chisora went 12 rounds.
Chisora started the fight last October brightly but faded as the bout went on with Usyk taking a unanimous decision victory.