Former world champion boxer Danny Green isn't afraid to put himself in harm's way, but he says he would never get behind the wheel after drinking.
A passionate supporter of Seven West Media's Pledge for Nate campaign, the Green Machine said drink-driving ruined lives.
"I am active in telling my family and friends not to drink-drive and have been for a long time," he said. "Everyone knows it's the wrong thing to do and it's dangerous and irresponsible, so why put yourself in that position?"
Green, a 40-year-old father of two, said he was moved by the tragic story of Nate Dunbar, the eight-month-old who was killed when a drunk driver smashed into his bedroom in January.
"If I have something at my house, no one drives home if they've had drinks," he said.
"You take their keys and say, 'No, you're not driving' or 'I'll call you a cab'.
"It might put them out of pocket or be a hassle, but big deal. He or she is going to wake up in the morning and they wouldn't have risked anyone's life."