This article originally appeared on Business Insider.
It takes a lot to run the world’s largest company — including a very early wake-up call.
Apple CEO Tim Cook wakes up before dawn and begins his by reading hundreds of feedback emails from customers before heading to the gym. Once he’s at the office, he works long hours and leads notoriously lengthy meetings.
Cook is a famously private person, but over the years, he’s shared glimpses into his daily schedule.
Here’s a look inside the typical day-to-day routine of Apple’s CEO:
Cook typically wakes up at 3:45 a.m.
Tim Cook wakes up before dawn. Drew Angerer / Getty Images via BI
“Got some extra rest for today’s event. Slept in ’til 4:30,” Cook joked about his early alarm.
He’s said that at that early hour, he has the freedom to spend his time as he sees fit.
“I can control the morning better than the evening and through the day. Things happen through the day that kind of blow you off course,” he told The Australian Financial Review in 2021. “The morning is yours. Or should I say, the early morning is yours.”
Once he’s up, he spends about an hour reading through his emails.
Tim Cook reads hundreds of emails a day. Stephen Lam / Stringer/Getty Images via BI
Cook told ABC News in 2014 that he was getting 700 or 800 emails a day and read “the majority of those,” including customer feedback.
“I cannot read all of them, no. I’d not admit to doing that,” he told the Australian Financial Review. “But I read an extraordinary number of them. It keeps my hands on the pulse of what customers are feeling and thinking and doing.”
Employees, too, have experienced Cook’s early-morning emails.
“Tim wakes up really early and is very well capable of expecting you to reply back before the sun comes up,” one source told Insider in 2014.
The Apple CEO hits the gym around 5 a.m. several days a week.
Tim Cook considers himself a fitness nut. Justin Sullivan/Getty Images via BI
The Wall Street Journal reported in 2014 that Cook didn’t work out on Apple’s campus, opting instead for a gym where he was less likely to run into his employees.
“I go to the gym and work out for an hour because it keeps my stress at bay,” he told Axios in 2018.
After his workout, Cook heads to Starbucks.
Tim Cook reads emails again from the coffee shop. Drew Angerer/Getty Images via BI
A 2012 Time article reported that there, he’d read through more emails before heading to the office.
It’s not clear whether Cook regularly eats breakfast, but he dug into scrambled egg whites, sugar-free cereal, unsweetened almond milk, and bacon during an interview with the New York Times columnist Andrew Ross Sorkin in 2017.
Once he’s at work, Cook hosts marathon meetings.
Tim Cook is known to relentlessly question employees in meetings that can last hours. AP via BI
The Journal’s 2014 article reported that Cook’s weekly operations meetings could last five or six hours and that he was known to relentlessly question employees.
“‘Talk about your numbers. Put your spreadsheet up,’ he’d say as he nursed a Mountain Dew,” the Journal wrote.
Mike Janes, the former head of Apple’s online store, told CNN Money in 2008 about an afternoon meeting with Cook.
“A number of us had tickets to see the Mets that night,” Janes said. “After hours, he was still drilling us with question after question while we were watching the clock like kids in school. I still have this vision of Tim saying, ‘Okay, next page,’ as he opened yet another energy bar. Needless to say, we missed the Mets game.”
He also has no problem sitting in silence until he gets a suitable answer.
“In meetings, he’s known for long, uncomfortable pauses, when all you hear is the sound of his tearing the wrapper of the energy bars he constantly eats,” CNN Money reported.
As a result, the Journal said, employees had learned to be prepared, cramming for the meetings as if they were tests.
For lunch, he keeps it pretty simple at the Apple cafeteria.
Tim Cook snacks on energy bars during the day. Justin Sullivan/Getty Images via BI
The Journal reported in 2014 that besides the energy bars he was snacking on throughout the day, he stuck to meals such as chicken and rice for lunch.
Cook is known to eat his lunch in the cafeteria with employees, unlike his predecessor Steve Jobs, who would typically eat with the design chief, Jonathan Ive.
Cook works long days at the office.
Tim Cook has said he’s one of the last to leave the office for the day. Justin Sullivan/Getty Images via BI
When he was COO, he was known for being one of the first people in the office and one of the last people to leave.
After hours, Cook’s life is pretty much a mystery.
Tim Cook’s hobbies include cycling and rock climbing. Kevin Dietsch via BI
We don’t know much about how Cook spends his weekends and evenings, though he’s outdoorsy and enjoys rock climbing and cycling.
The Journal reported his favorite vacation spots included the Yosemite and Zion national parks.
He has also vacationed at the Canyon Ranch resort in Arizona, where guests spotted him keeping to himself, often dining alone and reading on his iPad, Fortune’s 2012 profile of Cook said.
Áine Cain contributed to an earlier version of this story.
