Ananova:

A boxing champion has revealed he uses his son's wet nappies to keep his fists from swelling up.

Ukrainian Vitali Klitschko told German newspaper Bild that he used the wet nappies after winning his WBC heavyweight title bout against Nigeria's Samuel Peter.

Klitschko said he wrapped them around his hands and it helped him recover.

"Baby wee is good because it's pure, doesn't contain toxins and doesn't smell," the 37-year old boxer said.

"I wrap nappies filled with my three-year-old son Max's wee around my fists," he said, adding he got the idea from his grandmother.

"The nappies hold the liquid and the swelling stays down."