Corey Lewandowski, President Donald Trump's former campaign manager, said the then-candidate's diet was part of having a "routine" similar to "an amazing professional athlete."

In Lewandowski's new book, he noted how Trump's McDonald's order included four sandwiches and a chocolate milkshake.

"He would go and work 14 or 16 or 18 hours a day and not eat because he was so focused like a professional athlete would be," Lewandowski said. "He's in that game and he would wait until that game was over, until his day was finished, before we went out and got food for him."



President Donald Trump's former campaign manager told Business Insider that Trump's more-than 2,400 calorie McDonald's orders were a product of the then-candidate having a "routine" similar to "an amazing professional athlete."

"Like an amazing professional athlete who has a routine that they do all the time when they're ready for a big game," Trump "would consistently do the same things," Trump's former campaign manager Corey Lewandowski said.

In Lewandowski's just-released book about the campaign, "Let Trump Be Trump," which he co-authored with former top Trump campaign aide David Bossie, the men detail some specifics of Trump's fast-food based campaign diet.

On Trump's private jet "there were four major food groups: McDonald’s, Kentucky Fried Chicken, pizza and Diet Coke,” the authors wrote, adding that "the orchestrating and timing of Mr. Trump’s meals was as important as any other aspect of his march to the presidency."

The two wrote that Trump's McDonald's order consisted of "two Big Macs, two Fillet-O-Fish, and a chocolate malted," which adds up to a whopping 2,430 calories.

As Lewandowski told Business Insider, a meal such as that would come at the end of a 14-to-18-hour day where Trump would not eat until finishing the entirety of his daily schedule.

"He would make a big speech and then he wouldn't eat until after the speech," he said. "And that was just part of how it was. He would go and work 14 or 16 or 18 hours a day and not eat because he was so focused like a professional athlete would be. He's in that game and he would wait until that game was over, until his day was finished, before we went out and got food for him."

Trump has a well-known appreciation for fast food, which he believes is less likely to be contaminated with germs than food at other establishments. The president even reportedly used to have his bodyguard and confidante Keith Schiller run to McDonald's to pick up some of his favorite menu items and bring them back to the White House.

Trump also wanted to spend as little time as possible on acquiring his food and eating it, Lewandowski said.

"The president was very focused on not sitting down and wasting time having a meal," he said. "He was ready to move on and do the next thing."