For 90 percent of its life, it burns hydrogen into helium.

Ninety percent of the planet's marine life was destroyed and a great deal on land as well.

"I've spent 90 percent of my life being the only black dealing with a white world," he said.

You get the impression that music is 100 percent of his life.

Currently, just at the federal level, that's about 18 percent of your life.

Seven days a week, for 99 percent of my adult life, I've gone to my office to read, write and do research.

He spent 20 percent of his adult life in prison to pay back society for this transgression.

You know, we're at the point now where 90 percent of your life is run by computer chips," he adds.

"You're spending like 80 percent of your life in this place, working six days straight," he said.

But since statisticians estimate you will spend about 30 percent of your life in bed, why not?