Ukraine's Vitali Klitschko celebrates after winning his WBC World Heavyweight Championship fight against Nigeria's Samuel Peter in Berlin, October 11, 2008. REUTERS/Tobias Schwarz

BERLIN (Reuters) - Vitali Klitschko used his son’s wet diapers to keep his fists from swelling up after winning his WBC heavyweight title bout against Nigeria’s Samuel Peter, the Ukrainian told a German newspaper on Tuesday.

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 told Bild after he won back the WBC title on Saturday.

“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.”

Klitschko said Peter should try the diaper trick as well.