By the time you get out of medical school," he says, "you've spent a third of your life just studying to be a doctor.

She said her sister spent much of her young life studying criminology.

He spent the last third of his life studying mostly these subjects.

He spent the rest of his life studying number theory.

As a result, Bugallon spent three years of his life studying military science and warfare.

Sleep scientists spend their entire waking lives studying people like me, but I've learned little from them that my own body has not divulged.

I spent most of my life studying to be a historian, but it turned out history had other plans for me.

I had spent the last several years of my life studying again what I do for a living, which is acting.

"He had spent most of his life studying the Breen."

I've spent two decades of my professional life studying human mating.