Tyson Fury has given up meat as part of his fitness regime for his rematch with Wladimir Klitschko on July 9.
Fury (25-0-KO18) will defend the WBO, WBA 'Super' and IBO world heavyweight titles in Manchester next month after the 40-year-old Klitschko exercised his rematch clause.
The Ukrainian says he feels "rejuvenated and younger" in his own preparations for the contest - and Fury is making some changes too, having become a vegetarian in order to trim down after a period of indulgence following his title triumph in November.
"It's got to the point where, if the man next to me at the restaurant is eating a big juicy steak, I'm like: 'Urgh, that's disgusting,'" he said in an interview with the Guardian. "It can't be good for you eating a big piece of bloody meat like a steak because, unless you are rearing your own animals, it is very contaminated.
"I don't like vegetables. I have to force feed myself them because of my job. The only ones I like are sweetcorn and mushy peas and potatoes.
"I put on three stone after winning the title but I enjoyed every second of it. It cost me a fortune too. There were a lot of lobsters and fillet steaks went into this belly. A lot of champagne, a lot of vodka, a lot of beer.
"But I'm a big believer in that you have to get unfit to get fit again. Every time I've stayed in shape in the gym I've got stale or got injuries.
"But when I balloon up and have three or four stone to lose my muscles are allowed to recover to be ready to go banging again."