From the battery boss who naps at noon to the fitness entrepreneur who rises at 3:30 a.m., these are the most unusual CEO habits

• CEOs are often known for having extreme sleep schedules. One even rises at 3:30 a.m. daily.
• Stress management methods can range from strict workouts to long hours of meditation.
• "It's what makes me superhuman," a leader said of his morning routine. 

Running a company is a stressful job, especially if you're running one of the biggest firms in the world.

That high stress can lead to some intense and unconventional daily habits. Here are some of the most unusual routines of CEOs:

1. Waking up at 3:30 a.m. and launching into a 90-minute workout

CEOs are known for waking up early: Tim Cook and Richard Branson both rise around 5 a.m.

But Josh York, the 40-year-old CEO of in-home personal training company Gymguyz, takes it further and starts his mornings at 3:29 a.m., he told Fortune.

After having a cold rinse in the shower, he launches into an hour-and-a-half workout followed by a three-minute ice bath.

"It's what makes me superhuman," he told the outlet.

2. Bob Iger prefers to work out in a dark room with the TV on mute

The CEO of Disney works out first thing in the morning in a darkened room, he says in his MasterClass on 'Using your time effectively.'

He keeps a TV on silent during his workout so he can watch it against the backdrop of his own choice of music.

"It's my most creative time in many ways," Iger said.

3. A teaspoon of Icelandic cod liver oil washed down with black coffee to start the day

Mikael Berner, CEO of email software company Edison Software, starts his day with a dose of cod liver oil, a source of omega-3 fatty acids, vitamin A, and vitamin D.

It's meant to have benefits like promoting heart health and benefiting cells. Experts warn against taking more than one tablespoon daily to avoid consuming too much vitamin A.

4. Or, if you're Elon Musk, your morning routine includes eating a doughnut

Tesla CEO Elon Musk opts for a sugary start to the day.

A post on X declared that sugar is poison. Musk replied, "I eat a donut every morning. I'm still alive."

5. Mark Zuckerberg's diet requires eating 4,000 calories a day

The Meta CEO previously said on Threads that he eats roughly 4,000 calories to offset his intensive MMA and jiujitsu training.

Another popular diet with successful CEOs is only eating within specific time windows — intermittent fasting.

6. Taking an afternoon nap in the office

Robin Zeng, whose role as leader of the world's largest EV battery manufacturing firm CATL makes him known as China's "Battery King," takes a daily nap at noon in the office, according to an interview with the FT.

Some experts recommend short naps of between 20 and 30 minutes to improve focus and combat fatigue.

7. Two hours of meditation a day

Jack Dorsey, who runs financial services company Block, adhered to a strict wellness schedule that allowed him "just to stay above water," when he was also CEO of Twitter. Each day involved walking five miles, meditating for two hours, and only eating one meal.

Dorsey is a big proponent of mediation. For his birthday in 2018, he took part in a 10-day silent Vipassana meditation retreat where he meditated for nearly 17 hours daily.

"It's extremely painful and demanding physical and mental work," he said on a thread on Twitter at the time.

8. "Eyes-open" meditation

Another fan of meditation is Gwyneth Paltrow, CEO of wellness brand Goop.

She advocates "eyes-open" meditation, which involves being mindful at any moment in everyday life.

"Once you learn how to do eyes-open meditation — something you can literally incorporate at any time — you can be engaged with the world but still very connected to yourself," said previously told Business Insider. "I rely on it to feel more whole."

9. When faced with a tough problem, Jeff Bezos engages in some mind-wandering

The former Amazon CEO would hold meetings that lasted an undetermined amount of time. He used this time to let his mind wander in order to come up with creative ideas.

"When I sit down at a meeting, I don't know how long the meeting is going to take," Bezos told the Lex Fridman Podcast in December, "the reality is we may have to wander for a long time.

"Real invention, real lateral thinking that requires wandering," he said.

Letting your mind wander may seem like an inefficient use of time, but some psychologists believe it helps increase creativity and improve working memory.

10. A massage just before midnight

If reading a book and meditating aren't relaxing enough, Steven Barlett, a former CEO and founder famed for his Diary of a CEO podcast, recommends an 11 p.m. massage.

"I often get massages in the evening — it sounds crazy, but usually my masseuse comes over at 11 p.m," he told The Telegraph.

11. A more unusual habit among CEOs, Tobias Lutke says he never works later than 5:30 p.m.

While some CEOs brag about their long hours in the office and spending nights sleeping on the office floor, Shopify CEO Tobias Lutke previously said he never works later than 5:30 p.m.

"The only times I worked more than 40 hours in a week was when I had the burning desire to do so. I need 8ish hours of sleep a night," he said in a thread on Twitter, now X.

12. Bernard Arnault spends his weekends visiting LVMH-owned stores

The 75-year-old CEO and chairman of retail empire LVMH doesn't sleep in on Saturday mornings.

Instead, Arnault and his entourage take the time to visit the stores of any one of the several brands that LVMH owns. He's not there to shop but to point out any issues that might depart from his vision for the company, according to Bloomberg.

Celine, Louis Vuitton, Christian Dior, and Tiffany & Co. are just a few of the luxury brands under LVMH's umbrella. His sons told Bloomberg that Arnault's notes can be extremely detailed.

"He made a bunch of comments that were very, very detail-oriented," Alexandre Arnault said. "Things that you wouldn't typically notice, but once you've seen tens of thousands of stores over the years, I think it's what comes to your mind immediately."