Why you should work 4 hours a day, according to science

Philosopher Bertrand Russell's 1932 case for laziness: with modern machinery, society could work four hours a day and still produce just as much.

Studies suggest when you sleep is as important as how much you get.

The lost medieval habit of 'two sleeps'

While most people accept a single seven-to-nine-hour nightly slumber is ideal, the approach is a relatively modern idea. For centuries, interrupted sleep was the norm, with historians uncovering descriptions of two periods of sleep during the normal 24-hour cycle.

Humans may have evolved to need less sleep.

Overwork contributes to thousands of worker deaths

Can work really kill you? The World Health Organization and the International Labor Organization have estimated that long work hours contribute to thousands of death from strokes and heart attacks each year. This BBC article argues that the culture of overwork and burnout is leading to a public health crisis in desperate need of solutions.

Artificial lighting and modern practices like working late are linked with sleep shifts

An analysis of five adults participating in a German reality program that tasked them with living in a Stone-Age-like settlement for 2.5 months, provided some insights into how modern conditions may have shifted our circadian rhythms. The participants slept about 90 minutes more under these conditions, and went to bed earlier and rose earlier, raising questions about how circadian rhythms, sleep, and sleep quality are affected by modern lifestyles.

Some animals seem to live well on little sleep

African bush elephants typically sleep for about 2 hours per 24-hour day, coming in well under a human's recommended seven-hour minimum. Other animals also appear to skimp on sleep, by human standards, without the consequences humans associate with being sleep deprived. This academic article details the sleeping habits of animals that appear to thrive on fewer than 40 winks and explores whether their sleep processes are just built different.

See where the United States ranked in annual working hours per worker among major countries over time.

'Slow productivity' as a humane approach to work

Work is increasingly encroaching on every part of our lives, while digital technologies enable supervisors to micromanage every part of an employee’s day. “Slow productivity” is a movement to alter the pace and quality of one’s work to avoid burnout and provide a more humane approach to work.

Modern workplaces were engineered for efficiency, not work-life balance

Modern work organization traces back to 19th-century scientific management, an approach that optimized output by viewing workers as machine components. That logic still persists today and contributes to burnout, stress, and disengagement. Researchers propose a "circular work" model that combines effort with recovery, learning, and renewal, suggesting productivity and well-being should align rather than compete.

World records are often broken later in the day—and scientists wonder if muscle clocks explain the difference.

How to know if you're a workaholic

Are you a workaholic, or do you simply enjoy work? As it turns out, there's a big difference between putting in long hours at the office because you enjoy your job and actually having a work addiction. If you're reading this on hour 12 of your 14-hour workday and wondering which category you fall into, peruse this article to find out.

'Parkinson's Law' states that however long you have to complete a task is how long it takes, and originated as critique of British bureaucracy.

Chronobiologists study the effect of time on biological cycles

Circadian rhythms were first observed in the 1700s, when French astronomer Jean-Jacques D'Ortous de Mairan put a plant in a dark room and watched it still respond to day and night cycles, setting off further studies about specific light-dark biological cycles, an area of inquiry that continues today with the human "clock proteins" at the molecular level.

Europeans, on average, have roughly double the amount of vacation time as Americans, thanks to a long-standing belief that leisure benefits society.

Visualizing how American men and women spend every hour of the day, by decade of life

Drawing on three years of Census time-use data, the tool tracks 12 activities—sleep, work, housework, caregiving, TV, and more—across age groups from the 20s through 70s. One persistent gap: women spend 45 more minutes per day on housework than men on average.

There is a best way to wake up—but not a best time

Sleep and circadian rhythm researchers say that waking up at a consistent time each day—even on weekends—and viewing morning sunlight are the best ways to keep body functions running at their peak. (Some users may encounter a paywall.)

Investment banking jobs are famous for their long hours

Although some banks report attempts to cap hours for junior employees at 80 hours per week, these employees often continue working many more hours than that. Goldman Sachs analysts, for instance, went viral back in 2021 when they put together a PowerPoint deck complaining of 100-hour work weeks and mental health struggles.

There is a template for how to live a better, healthier day, and it includes a digital sunset

Science suggests that early-morning exercise, later-morning peak work or social time, consistent exercise, and a "digital sunset"—starting to turn down the lights in the evening and avoid screens—are important for circadian health.

Eliminating distractions is essential to improving one's attention span

Setting a baseline, removing distractions, establishing focus rituals, taking breaks, and finding purpose in your task are five science-backed practices that can help address a short attention span. Bestselling author Daniel Pink breaks down how to approach each part of the plan and introduce these habits to your life today.

The US loses roughly $400B a year in productivity due to sleep deprivation

For an article about a woman who built a business empire telling bedtime stories, the Hustle created this graphic showing the estimated GDP loss associated with chronic insomnia. The United States had a much more significant loss than other countries.

The myth of multitasking's prestige

In this article, renowned neurologist Richard Cytowic seeks to expose multitasking as a fool’s errand. Cytowic explains how the brain, like a computer, switches between tasks rather than handling multiple tasks at once. He shares that attempting to focus on multiple activities at the same time consequentially decreases the brain's ability to ignore distractions, maintain focus, and organize information. Instead, he suggests, try to focus on completing one thing at a time.

Understanding Thoreau's critique of American work

John Kaag, a coauthor of "Henry at Work: Thoreau on Making a Living," explains how the writer is often mischaracterized as a layabout who avoided responsibilities. Kaag, though, notes that Thoreau was a jack-of-all-trades—working as a schoolteacher and a handyman, and even for his father's pencil-manufacturing company—who came to believe that relentless striving was getting in the way of authentic living.

Scholars believe Dickens wrote over a million words of nonfiction

The author began writing professionally in his teens, first as a court reporter, then for many papers, penning op-eds, criticism, and other miscellany. While Dickens is often discussed as a novelist, he has a massive corpus of works situated in reality.

Elon Musk is known to sleep under his desk during intense periods of work

The tech company founder and CEO has a wide variety of leadership principles he has kept consistent while building multiple different companies, including eschewing middle management and using the "idiot index," a formula he uses to identify manufacturing inefficiencies.

Are people more or less productive when they work from home?

While some argue that people have fewer distractions while working from an office, making them more productive, others point to data showing some people are more productive when they eliminate their commutes and work from home instead.

The brain will attempt to rest itself in periods of chronic sleep deprivation

Skimping on sleep lengthens reaction times and blunts decision-making skills. At a certain point, the brain will try to sneak sleep where it can, shifting sections offline even as you remain awake. Going without sleep raises blood pressure, undermines the immune system, and increases one's risk of dementia.

When your 9-to-5 becomes optional

You've seen the headlines. But what would actually happen if everyone's 9-to-5 became optional? We dug into the data. Traced automation philosophy back thousands of years. Examined what happened when elevator operators disappeared. Looked at Alaska's 40-year experiment paying every citizen. And investigated the Philippines, where 89% of call center jobs are now at risk. What we found was more positive than bleak. This video explores three questions: What does the data actually show? What does history tell us about this kind of disruption? And what happens when work becomes optional?

'Early to bed, early to rise, work like hell, and advertise.'

- Ted Turner, on his secret to success (1938-2026)

Dickens' childhood job influenced his novels

After his father was imprisoned, Dickens took up work in a shoe-blacking factory. His novels often featured hardscrabble protagonists, many of them children, forced to navigate the grim realities of the Industrial Revolution. Today, stories that follow in that model are described as "Dickensian."

There's some evidence that working from home has helped the environment

Those who work fully remote can have a 54% lower carbon footprint than on-site laborers, according to one 2023 study. For instance, the share of Americans driving to work alone decreased by about 7% between 2019 and 2022, significantly reducing vehicular emissions.

A scientific analysis of famous time travel stories

This 8-minute video explores how time travel influences the narrative arc of several movies, books and video games, from Harry Potter to A Christmas Carol. (Warning: it contains spoilers!) J.K. Rowling and Charles Dickens set myriad parameters as they’re worldbuilding to avoid paradoxes and create quasi-logical timelines. By drawing diagrams as he’s speaking, the video breaks down how time works in some of popular culture’s most beloved fictional universes.

Sitting 10+ hours per day increases dementia risk

People who sit for at least 10 hours per day are more likely to develop dementia, according to a study published in 2023. This article details the study on the murky relationship between brain health and prolonged sitting. This study involved...

Astronauts follow strict schedules to mimic Earth days and stay healthy in space

Experiencing 15 sunrises and sunsets a day while aboard the International Space Station, visitors preserve their circadian rhythms and mental health with fixed timetables. Astronauts have described sleep as living in a vacuum cleaner due to ongoing air filtration.

What it's like to live with insomnia

The biological process Shakespeare referred to as the chief nourisher of life's feast is necessary for the body and mind to rest and repair from the activities of daily life. As sleep evades the exhausted, sufferers also lose emotional stability, mental clarity, social connections, and more while simultaneously gaining waves of interrupted biological processes that can lead to disease and death.

A teenage Dickens found work as a political journalist

Dickens found work as a reporter for the Mirror of Parliament, a weekly newspaper focused on the British legislature. After a few years, he moved to the Morning Chronicle, where he began producing his creative work. Professor John Drew, author of "Dickens, the Journalist," said that the writer "realized he could wield a much more direct, if not more glamorous kind of power, by using his position as a leading writer of fiction and a magazine editor."

Most things you would get tested for at the doctor’s office are influenced by circadian rhythm

In this video, a Salk Institute Researcher offers daily habit tips focused on aligning with your circadian rhythms. She notes heart rate and blood pressure are highest in the afternoon, for example, and there’s a triglyceride peak in the morning. Generally, she says, it’s a good idea to schedule your doctor’s checkups at the same time of day each year so there’s consistency across your data.

Moving your body every day is key to longevity

In an era of biohacking, where millionaires subject themselves to draconian routines and tests to de-age themselves, one study suggests a super simple key predictor of mortality: more than any other trait, how much subjects moved determined how long they'd live. Movement mattered even more than age in predicting overall life longevity. Researchers suggest this means we should all simply get outside a bit more. Read more about the study here.

Sleep is often viewed individually, when its impact and meaning may be more communal

At any given point, roughly 2 billion people may be asleep on Earth. The typical scientific description of sleep focuses on its individual impact, but the phenomenon shapes whole cultures and eons. This essay prompts a fresh rethinking of the importance of sleep for humanity.

Read the works of Charles Dickens

Dickens' work has long been in the public domain, meaning it's freely available to readers. Project Gutenberg's collection of Dickens' novels allows you to read classic novels like "Oliver Twist" and "A Tale of Two Cities," as well as early works like "Sketches by Boz," at no cost.

After finding success as a novelist, Dickens started his own newspaper

Dickens made enough from "Sketches by Boz," "The Pickwick Papers," and "Oliver Twist," that he was able to work full time as a novelist. Still, he was still interested in journalism and decided to publish his own newspaper, the Daily News, in 1846. After 17 issues, he felt he no longer had time to focus on his novels and handed the operation off to a friend.

See who Americans spend time with over their lives

Time with friends peaks in the teens and falls sharply by the 30s, while time with coworkers dominates middle age. After retirement, both nearly vanish, and time spent alone climbs steadily to nearly 8 hours a day by age 80.

Hustle culture is what happens when the belief that working extremely hard will put people on the path to success becomes the norm in a workplace or other group

From pulling all-nighters at the office to never taking a weekend off, hustle culture has been known to lead to employee burnout. The Worklife with Adam Grant podcast explains hustle culture and its effects in depth in this episode.

Sleep research published in 2021 confirmed that there is a 'creative sweet spot' when people are drifting off to sleep, and that if they wake up at that point to work, it can boost their creative problem-solving.

Ending daylight saving time may prevent as many as 300,000 strokes annually

Changing clocks twice a year disrupts circadian rhythms, which last an average of 24 hours and 12 minutes. Studies have shown that permanent daylight saving time provides fewer health benefits than standard time.

Emulating Earth’s light-dark cycle is important for astronaut health and safety

Astronauts aboard the International Space Station experience 16 daily sunrises, but scientists have learned to try to promote circadian rhythms by phasing through several light settings aboard the ISS to improve astronauts’ sleep and productivity.

People who work from home might be less likely to take vacation than in-person workers

Remote workers took 5.5% less annual vacation time than their on-site counterparts, according to one 2023 study. The researchers found that remote workers were 22% less likely to take any vacation time at all, and that when they did go on vacation, they tended to take less total time off.

The hour originated from an ancient Egyptian astronomical system

The movements of astronomical objects, measured in a day and a year, form the foundation of our sense of time. The Egyptians divided each day and night into 12 time eras, using arbitrarily selected stars as references rather than movements of specific celestial objects.

Despite his sometimes caustic satire, Dickens was ultimately an optimist

Michael Slater, a professor of Victorian literature at Birkbeck College, notes that Dickens' anger at Parliament and social injustice never got in the way of his optimism. "There is a constant allegiance to the lives of ordinary people and their pleasures," he said in a 2001 interview with "In Our Time."

The exercise sweet spot is shorter than you'd think—and longer workouts aren't generally better.