On top of the zenith responsibility of running the most powerful country in the world, Donald Trump was an executive of 515 business entities, according to the financial disclosure forms required by the Federal Election Commission, before he became POTUS.

How does (arguably) the busiest man in the world stay productive?

Trump doesn't let drinking slow him down.

Despite launching his own vodka brand, Trump Vodka, in 2005, Donald Trump doesn't drink a drop of alcohol. An aversion to it developed when alcohol abuse claimed the life of his older brother Freddy, Jr.

He mentions not drinking coffee and while it's clearly not a part of his daily routine, he did sip an espresso once from a bakery in Miami.

What does wet his whistle is diet soda, at least that's what he said in an interview. According to his campaign aides, he "guzzles Diet Coke all day long" and a virgin Bloody Mary is his "cocktail" of choice.

Trump doesn't devote much of his time to reading.

Reporter Marc Fisher wrote in 2016 that Trump said he has no time to read books. "I never have," said Trump. "I'm always busy doing a lot. Now I'm more busy, I guess, than ever before."

Trump told an interviewer he likes his briefings short, ideally one-page if it's in writing. "I like bullets or I like as little as possible. I don't need, you know, 200-page reports on something that can be handled on a page. That I can tell you."

Tony Schwartz, Trump's ghostwriter of The Art of the Deal, said he never saw a book on Trump's desk, office, nor apartment. Schwartz said, "I seriously doubt that Trump has ever read a book straight through in his adult life."

His diet is based on convenience and cleanliness.

The best word to describe Trump's diet is American. Rich, sugary, and salty.

From Big Macs to steaks to pizza, former aides remembered food was not a big deal as long as he had it. Like everything else in his workaholic life, hunger was just another problem to solve.

A well-documented germaphobe, Trump is not unaware of his health. Cleanliness over nutrition is the priority in his mind, ergo he regards fast food as trustworthy fare.

"One bad hamburger, you can destroy McDonald's. One bad hamburger, you take Wendy's and all these other places and they're out of business," Trump told Anderson Cooper of CNN. "I'm a very clean person. I like cleanliness, and I think you're better off going there than maybe someplace that you have no idea where the food's coming from. It's a certain standard."

Trump doesn't sleep.

Famous for his 3-to-4-hours-a-night sleep schedule, Trump may have a rare disorder carried by people known as "short sleepers" or as the Wall Street Journal called the "Sleepless Elite."

Short sleepers, require only a short amount of sleep every night instead of the average 7-8 hours. They make up 1-3 percent of the population, according to neurologists.

He involves his (complicated) family in almost everything.

Despite two difficult divorces, Trump values closeness between his ex-wives, and all five of his kids say he was a tough, firm, but available father to them growing up.

His wife Melania takes primary care of Barron, their youngest son of 10, and his two adult sons are currently running the Trump organization.

It's clear he's involved in his family's lives, but it's difficult to tell when work isn't involved in some capacity.

Exercise is not a priority.

Aside from the occasional golf game, Trump can usually be found in the White House, Trump Towers, or in his winter getaway mansion in Mar-a-Lago, Florida, working.

There's a purpose behind his wardrobe.

Donald Trump has worn the same thing forever. His daily outfit can be described as a large and dark quadratic suit, likely a Brioni, with a brilliantly-colored tie that extends noticeably below his belt.

His suits are purposely not tailored. "Some people think it's best to have custom-tailored clothing," he said in his book, Think Like a Billionaire. "I don't recommend it unless you have an oddly shaped body, and unless you have a great deal of time."

Conclusion: Trump's habits demonstrate one main thing.

Since he doesn't drink, write, read, or sleep very much, he seems to have more time than the average person. How does he use his precious time?

It's an enigma, but we do know one thing for certain: he almost never stops communicating. He is always speaking to his family, his staff, the media, Internet users, the country, or world leaders. To be a good communicator, it requires energy and passion and it appears he has formed daily habits to help optimize his ability to communicate effectively.

Sleeping fewer than 8 hours each day and relying on diet soda to get a caffeine boost may not be the best for your long-term health. But for Trump, relying on routine and minimizing time spent on other activities helps him achieve his goal of getting his messages out as quickly as possible.

As Trump told the New York Daily News in 2009, "How does somebody that's sleeping 12 and 14 hours a day compete with someone that's sleeping three or four?"