Iconic country music star Dolly Parton is 72, and she gets up at 3 a.m. every day.
"I get up early. … I'm usually up by 3 o'clock. I go to bed early, but I'm just an early bird." Parton told NBC's "The TODAY Show" on Friday.
"I get up, I do my little meditations, I do my little spiritual work," she said.
She also reviews work she has to do for the day.
"I do more work between 3 [a.m.] and 7 [a.m.] than most people do all day, because it's quiet and the energy's all low, except mine. So I just really get a lot done.
"I just love the wee hours, I call it," Parton said.
"I do more work between 3 and 7 than most people do all day!" @DollyParton tells @hodakotb and @carsondaly that she wakes up at 3 a.m.
Indeed, the septuagenarian singer-songwriter — who has already been awarded the Living Legend medal by the Library of Congress — is still producing new work.
She is the only woman on Forbes' 2018 list of top-earning country music stars, with earnings of $19 million. In addition to making music, Parton owns Dollywood-themed destinations (including a theme park, a resort, a water park and a collection of mountain cabins) and other entertainment attractions.
To be sure, Parton is not the only ultra-successful person who gets up early.
Cook bragged on Twitter of sleeping in "'til 4:30" one morning ahead of an event at Apple.
While getting up early may be a productivity hack for the likes of Parton and Cook, sleep is important too.
In August, Tesla CEO Elon Musk revealed he was working 120 hours a week. Entrepreneur, author and sleep advocate Arianna Huffington wrote an open letter to the entrepreneur, telling him to spend more time resting.
"Working 120-hour weeks doesn't leverage your unique qualities, it wastes them. You can't simply power through — that's just not how our bodies and our brains work," Huffington wrote.
As for Parton, gratitude and prayer bookend her day.
The last thing she does before bed: "I pray," Parton told "The TODAY Show."
"And that's the first thing I do when I get up, I just thank the lord for another day," she says.
Disclosure: NBC and CNBC are divisions of NBCUniversal.