Anthony Joshua believes he must beat the "best heavyweight out there" to regain his world titles from Andy Ruiz Jr.
Joshua surrendered his IBF, WBA and WBO belts to the Mexican following one of the biggest shocks in boxing history on his American debut in New York in June.
The 29-year-old Briton has a swift chance to avenge the first loss of his professional career when the pair meet for a hotly-anticipated rematch on December 7 in Saudi Arabia.
"I've been doing this since I was six-years-old. This is the only thing I know to do, besides working with my dad in construction, being in the sun – I don't want to do that s***.
"I feel Anthony's trying to take my kids' Cheerios, you know?. That's what gives me that extra motivation.
"The only motivation I have right now is for my kids and my loved ones, so if someone's going to try and take that away from, I am going to die trying (to defend it)."
