Country music legend Kris Kristofferson is not a man to mess with in a fight - he once broke a man's nose with a single punch.
The former boxer insists he can still throw a punch at 73 and has a mean left jab, as one guy in Germany found out several years ago.
The singer/actor says, "Your weight has to be behind the punch to make it matter. Put your left foot in front of you, your right foot behind you.
"As you punch, your shoulder and hips come around, but you don't want to cock your arm - just extend your arm straight out."
And Kristofferson tells Men's Journal magazine, "It's effective; I once broke a guy's nose in an alley in Germany and didn't have to throw any more punches."