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David Ko stands in front of a blue and purple "Fortune" background.
The CEO behind the world’s top sleep and meditation app says most leaders are operating at ‘about 20%’ without a ‘fully recharged’ battery

David Ko noted most executives will say they’re good when you ask how they are. Some additional interrogation suggests the opposite is true.

By Sasha RogelbergDecember 19, 2025
Johnson
Republican leaders powerless to stop a January vote on healthcare after moderates defect on ACA subsidies
By Joey Cappelletti and The Associated PressDecember 18, 2025
Simple App as best intermittent fasting app
The Best Intermittent Fasting Apps of 2025: From Nutrition Experts
By Christina SnyderDecember 18, 2025
Noom as best weight loss program
Best Weight Loss programs of 2025: Expert Tested
By Christina SnyderDecember 18, 2025
social epidemic
25 years after a Harvard professor told America it was ‘bowling alone,’ the loneliness epidemic is starker than ever
By Peter Smith and The Associated PressDecember 18, 2025
Latest Stories
Politics‘Inherent contempt’ charges are being drafted now to fine AG Pam Bondi for each day that full Epstein files aren’t released, congressmen say
By Jason MaDecember 21, 2025
Epstein abuse survivor Lisa Phillips speaks during a news conference with lawmakers.
LawTrump photo removed from Epstein files: DOJ official says ‘victims rights groups’ behind decision yet doesn’t believe victims were shown
By Eva RoytburgDecember 21, 2025
Politics‘Bring it on’ — Top Justice Department official responds to impeachment threat over redacted partial Epstein files
By Jason MaDecember 21, 2025
SuccessMultimillionaire musician Will.i.am says work-life balance is for people ‘working on someone else’s dream’—he grinds from 5-to-9 after his 9-to-5
By Orianna Rosa RoyleDecember 21, 2025
woman speaking at conference
SuccessHubSpot CEO avoids the Sunday scaries simply by working on the weekend
By Sydney LakeDecember 21, 2025
Tom Freston
Arts & EntertainmentTom Freston, the beat-poet exec who made MTV cool for 20 years, sees ‘really nothing in it for the consumer’ from Netflix, Warner, or his old company
By Nick LichtenbergDecember 21, 2025
sustainability
Commentary2025: the year sustainability didn’t die 
By Andrew WinstonDecember 21, 2025
Young banker
SuccessIs AI really killing finance and banking jobs? Experts say Wall Street’s layoffs may be more hype than takeover—for now
By Emma BurleighDecember 21, 2025
More Health
SuccessTech CEO Bryan Johnson says he’ll make humans immortal by 2039—first he just needs to sort out ‘buggy’ issues like ‘mistakenly causing cancer’
By Orianna Rosa RoyleDecember 17, 2025
Johnson
PoliticsVulnerable Republican blasts choice to send health insurance spiking as ‘political malpractice’
By Kevin Freking, Lisa Mascaro and The Associated PressDecember 16, 2025
FDA
HealthFemale libido pill gets expanded approval for menopause by FDA
By Matthew Perrone and The Associated PressDecember 15, 2025
HealthNicotine pouches offer huge promise—so long as the U.S. doesn’t repeat its mistake with vaping
By Max CunninghamDecember 14, 2025
Thompson
C-SuiteAtlantic CEO Nick Thompson on how he learned to ‘just keep moving forward’ after his famous firing at 22
By Nick LichtenbergDecember 14, 2025
HealthA Wisconsin couple was paying $2 a month for an ACA health plan. But as subsidies expire, it’s soaring to $1,600, forcing them to downgrade
By Ali Swenson and The Associated PressDecember 13, 2025
Julian Braithwaite is the Director General of the International Alliance for Responsible Drinking
CommentaryGen Z is drinking 20% less than Millennials. Productivity is rising. Coincidence? Not quite
By Julian BraithwaiteDecember 13, 2025
Nicholas Thompson
C-SuiteI took over one of the most prestigious media firms while training for an ultramarathon. Here’s what I learned becoming CEO of The Atlantic
By Nicholas ThompsonDecember 13, 2025
HealthFactor Meals Review 2025: Tester Approved
By Christina SnyderDecember 12, 2025
Donald Trump
Health‘Tragedy in the making’: Top healthcare exec on why insurance will spike to subsidize a tax cut to millionaires and billionaires
By Nick LichtenbergDecember 12, 2025
HelloFresh meal delivery service.
HealthHelloFresh Review 2025: We Tasted Everything So You Don’t Have To
By Christina SnyderDecember 12, 2025
Noom as best weight loss program
HealthNoom Review (2025): Everything You Need to Know
By Christina SnyderDecember 12, 2025
Tensed teenage girl writing on paper
Success40% of Stanford undergrads receive disability accommodations—but it’s become a college-wide phenomenon as Gen Z try to succeed in the current climate
By Preston ForeDecember 12, 2025
Dr. Javier Cárdenas is the director of the Rockefeller Neuroscience Institute NeuroPerformance Innovation Center.
CommentaryFists, not football: There is no concussion protocol for domestic violence survivors
By Javier CárdenasDecember 12, 2025
HealthThe Best Meal Delivery Services for Weight Loss of 2025: Dietitian Approved
By Christina SnyderDecember 11, 2025
Best protein lead image
HealthThe 8 Best Protein Powders of 2025: How to Choose, According to an RD
By Christina SnyderDecember 9, 2025
Transparent Labs Creatine HMB as best creatine
HealthThe Best Creatine Supplements of 2025: Tested and Approved
By Christina SnyderDecember 9, 2025
Jon Rosemberg
CommentaryThe cult of productivity is killing us
By Jon RosembergDecember 9, 2025
Trump
CommentaryAI doctors will be good at science but bad at business, and big talk with little action means even higher drugs prices: 10 healthcare predictions for 2026 from top investors
By Bob Kocher, Bryan Roberts and Siobhan Nolan ManginiDecember 9, 2025
Kevin Kiley
Politics‘It absolutely matters politically’: Swing-district Republicans alarmed at spiking health insurance premiums tipping midterms
By Marc Levy, Kevin Freking and The Associated PressDecember 8, 2025
HealthThese toxic wild mushrooms have caused a deadly outbreak of poisoning in California
By The Associated PressDecember 7, 2025
Schumer
Politics‘This is a bad idea made worse’: Senate Dems’ plan to fix Obamacare premiums adds nearly $300 billion to deficit, CRFB says
By Nick LichtenbergDecember 5, 2025
Best vegan meal delivery
HealthBest Vegan Meal Delivery Services of 2025: Tasted and Reviewed
By Christina SnyderDecember 5, 2025
RetailBest Prepared Meal Delivery Services of 2025: RD Approved
By Christina SnyderDecember 5, 2025
Gen Z
EconomyAmerica, meet your alienated youth: ‘Gold standard’ Harvard survey reveals Gen Z’s anxiety and distrust, defined by economic insecurity
By Nick LichtenbergDecember 4, 2025
Jensen Huang
SuccessNvidia CEO Jensen Huang admits he works 7 days a week, including holidays, in a constant ‘state of anxiety’ out of fear of going bankrupt
By Jessica CoacciDecember 4, 2025
HealthThe 6 Best Meal Delivery Services for Singles in 2025
By Christina SnyderDecember 4, 2025
HealthThe 6 Best Meal Delivery Services for Families (2025)
By Christina SnyderDecember 4, 2025
Boston Celtics head coach Joe Mazzulla stands on the court with his arms folded
Workplace CultureYou don’t need to have fun at work—take it from NBA head coach Joe Mazzulla: ‘Fun is a cop-out sometimes when things aren’t going well’
By Dave SmithDecember 4, 2025
Bill Gates
HealthBill Gates decries ‘significant reversal in child deaths’ as nearly 5 million kids will die before they turn 5 this year
By Nick LichtenbergDecember 4, 2025
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Most Popular
Future of WorkA Walmart employee nearly doubled her pay after entering its pipeline for skilled tradespeople. 'I was able to move out of my parents' house'
By Anne D'Innocenzio and The Associated PressDecember 20, 2025
An image of a popular article
Future of WorkMeet a 55-year-old automotive technician in Arkansas who didn’t care if his kids went to college: ‘There are options’
By Muskaan ArshadDecember 21, 2025
An image of a popular article
EconomyFor the first time since Trump’s tariff rollout, import tax revenue has fallen, threatening his lofty plans to slash the $38 trillion national debt
By Sasha RogelbergDecember 12, 2025
An image of a popular article
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