After decades of operating, he still spends his night hours thinking about tomorrow’s surgery.

Question: What keeps you up at night?

Joseph Zuckerman: What keeps me up at night is thinking about what I'm going to do the next day. I operate on Tuesdays and Wednesdays, so Monday night and Tuesday night, the day before the surgeries next day, those are the times that I've probably stay up longer in bed, trying to get to sleep thinking about the cases of the next day, what I'm going to do, making sure I’ve got all the bases covered, making sure I am completely prepared.