Rendall Munroe insists he has no plans to retire for a second time despite losing to Lee Selby in the their European featherweight title fight.
And Munroe, 33, is adamant Saturday's setback in Cardiff is not the end.
"I am not finished yet. I'm a born and bred fighter, a fighter who is as fit as they come and I will stand there all night," he told BBC Radio Leicester.
"If you want to do 30 rounds, I will do 30 rounds."
Munroe retired after losing his WBA interim super-bantamweight title fight against Scott Quigg.
However Welshman Selby, 26, was a convincing winner against Munroe, with the referee stopping the fight in the sixth round.
Munroe felt the decision to end the fight early was harsh.
He added: "My dad always said sometimes things get hard but it is just a test of how bad you really want it. I am not finished yet. I am still young and still lively.
"Look how good I looked on the scales. I have never looked that good on the scales through all the time I have been boxing."