He actually has already discussed his sleep, diet, and exercise habits in this interview:https://www.youtube.com/watch?v=FE4iFYqi4QU

The part you're looking for is 2-3 minutes in but its worth watching the whole thing as they ask him some questions that are different from the usual ones.

Because he gets nine hours a night, has scrambled eggs and salmon every morning after his daily cardio and yoga....err no he doesn't, he's like the rest of us. Six hours and coffee if your lucky! He really is human!