President Donald Trump’s fast-paced days and sleepless nights seem to suggest that he knows the clock is ticking, according to a veteran White House correspondent.

On a new episode of The Daily Beast Podcast, ABC News’ Jonathan Karl joined a chorus of officials and reporters who have flagged the 79-year-old’s unusual lifestyle—and why “the guy actually seems to have a hell of a lot of energy.”

“He doesn’t sleep. I don’t know how he does it,” Karl told host Joanna Coles. “He’s taking calls late at night. I would find that the best time to reach him if I wanted to call him during the campaign was either late at night—far later than you would ever call most other people—and very early in the morning. I mean, I would talk to him sometimes before seven, and he’s already up. He’s already watch

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