When You See This Man Slaying The Ice In His Hockey Uniform, You'll Never Guess How Old He Is

His mustache is cooler than yours, too.

Mark Sertich is a 94-year-old man living in Duluth, Minn. He has seven children, 18 grandchildren, 35 great-grandchildren and five great-great grandchildren. The guy's lived a long, fulfilling life and it wouldn't surprise anyone if at this point he was relatively immobile and living in some sort of assisted housing situation.

Not so. Actually, he's could be more healthy and mobile than plenty of people half his age. Every other day Sertich laces up his skates to play hockey on a team with players as much as 70 years younger than him and he more than holds his own.

So how has he been healthy for so long?

Sertich says he's been exercising his whole life.

"When I was still working, I started jogging and then I got to a point where I was able to run some marathons. So, when I reached age 59, I ran my first marathon. Then I finished five after that," he recalls. "I listened to people who said, 'Oh gee, you better not be doing that anymore.' So then I got into in-line skating and at age 75 I did my first in-line marathon. I did 11 altogether."

Casual.

Want to stay active for a whole lifetime like him? Here's how.

"The most important thing is you have to challenge yourself once in a while. Say, 'Gee, I think I can do that. And go out and try it," notes Sertich. The first step is opening yourself up and getting involved in activities.

His oldest daughter, Carole Fosness, is 73 and still marvels at him. "Everybody says to him, 'How do you do it every day, keep on going like that?' and he says, 'Well, I tell myself if I turn this motor off, I'll never get it started again,'" Fosness says with a laugh.

And apparently, eating plenty of eggs won't hurt.

"For many years, they said that eating eggs is maybe not too good for you because of the cholesterol part," says Sertich. "Well, that's the other thing I've been doing for as long as I can remember — having a couple of eggs for breakfast. And a couple of sausages."

Good on you, Mark. Good on you.

(H/T: TODAY)