Why Marcus Lemonis sleeps 40 hours a week—and works the rest of the time

Marcus Lemonis is the CEO of billion-dollar company Camping World and has invested in more than 100 businesses.

So when CNBC recently asked how much time he puts in each week, we weren't surprised to learn that the traditional 40-hour workweek doesn't exactly cut it.

"Rather than asking how many hours I work a week, you'd be better off asking me how many hours I sleep a week," said the star of CNBC's "The Profit." "I probably sleep 35 to 40 hours a week."

He said he's on "the 40-hour program" — just not in the way you'd expect. He sleeps 40 hours a week, and works the rest of the time.

But for Lemonis, the nonstop work schedule isn't drudgery; it's fun.

"Look, if you told me to work less, I'd be unhappy," he said.

When people tell him he needs a better work-life balance, he says, "Why? I like what I do."

He said he plays tennis once in awhile, does yoga and works out, but if you told him to take a vacation, he wouldn't do it.

"Who needs hobbies?" Lemonis added. "I've got 100 businesses."

Many people would probably find working with so many different businesses and having such a packed meeting and travel schedule stressful.

"For me, that's relaxation," Lemonis said.

More from The Definitive Guide to Business with Marcus Lemonis:
Marcus Lemonis says business books are 'outdated' — here's what he reads instead
Marcus Lemonis shares his favorite productivity trick: Knockout lists
12 inspiring quotes from Marcus Lemonis that will help you be more successful

Video by Mary Stevens. CNBC's "The Profit" airs Tuesdays at 10 p.m. EDT.