Evie Summers
Thomas Edison, the father of artificial light, was a staunch opponent of sleep. He claimed to sleep no more than three to four hours a day and enforced the same vigilance among his employees. Edison believed that sleeping eight hours a night was a waste and even harmful, famously stating in 1914 that there is really no reason why men should go to bed at all. However, despite his public stance, Edison had a secret weapon: power napping. He would take brief naps throughout the day, often in unusual locations, and always awoke feeling reinvigorated and alert. Edison also experimented with a unique napping technique, holding balls in his hands while napping, intending to wake himself up just as he started to doze off. This technique, now supported by scientific research, is believed to spark creativity by accessing the hazy stage between consciousness and sleep.
| Characteristics | Values |
|---|---|
| Sleep duration | 3-4 hours |
| Power naps | Yes |
| Nap duration | 20 minutes |
| Nap frequency | 1-2 times per day |
| Nap location | Napping cots, outdoors in the grass, or on a chair |
| Nap technique | Holding a small object in the hand and letting it fall to the floor as one dozes off |
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What You'll Learn
Edison's dislike for sleep
Thomas Edison, the inventor of the lightbulb, was a staunch opponent of sleep. In an 1889 interview with Scientific American, Edison claimed he slept no more than three to four hours a day, and he apparently enforced the same vigilance among his employees. Edison believed that sleeping eight hours a night was a waste and even harmful. He went as far as to say, "There is really no reason why men should go to bed at all".
Over time, children's books and magazines began to promote this type of Edisonian asceticism. Edison's attitude towards sleep was so contemptuous that he wrote in 1921: "People will not only do what they like to do — they overdo it 100 per cent. Most people overeat 100 per cent, and oversleep 100 per cent, because they like it".
Edison's assistants were expected to keep up with his unusual sleep patterns. John Hubert Greusel wrote in 1913 that "When they [assistants] fell from sheer exhaustion he seemed to begrudge the brief hours they were sleeping". Edison is also said to have selected his subordinates based largely on their physical endurance.
However, despite his public stance against sleep, Edison had a duplicitous secret: power napping. Napping cots were scattered throughout his property, from labs to libraries, and he was frequently photographed sneaking in shut-eye in unusual locations. He took one or two brief naps most days, and always awoke from his naps reinvigorated rather than groggy.
Edison also had a unique technique for napping. He would nap while holding a ball in each hand, assuming that as he fell asleep, the balls would fall and wake him. This way, he could remember the thoughts that come to us as we are nodding off, which we often do not recall. Modern science supports Edison's belief that the phase between sleep and wakefulness is uniquely creative, and researchers have validated his trick as an effective way to boost creativity.
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Power napping
Thomas Edison, the prolific inventor, is known to have advocated against sleep, claiming that sleeping eight hours a day was a waste and even harmful. However, he did recognise the value of napping and is said to have utilised a unique technique to enhance his creativity and productivity. Edison's approach involved napping while holding a ball or an object in his hands, intending to wake himself up as he started to doze off. This method allowed him to explore the hazy stage between consciousness and sleep, known as hypnagogia or N1, which has been associated with increased creativity and insight.
The benefits of power napping are supported by various scientific studies. Research at NASA revealed that pilots who took 26-minute power naps experienced a 54% improvement in alertness and a 34% enhancement in job performance compared to their non-napping counterparts. Additionally, a University of Düsseldorf study found that memory recall improved significantly once individuals reached 6 minutes of sleep, indicating the positive impact of even a brief nap on memory consolidation.
To optimise the benefits of power napping, it is essential to find the duration that works best for you. While 20-minute power naps are commonly recommended, some individuals may prefer shorter or longer durations. Setting an alarm can help ensure that your power nap doesn't turn into an extended sleep session, which could disrupt your nighttime sleep. Additionally, creating a comfortable environment and allowing your mind to drift without holding objects to wake you up, as Edison did, can enhance your napping experience.
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The creative benefits of napping
Thomas Edison, the father of artificial light, was staunchly opposed to sleep, claiming that sleeping eight hours a night was a waste and even harmful. He reportedly slept for only three to four hours a night and enforced the same vigilance among his employees. However, Edison had a secret: he was a power napper.
Edison frequently napped in unusual locations, and cots were scattered throughout his property, from labs to libraries. He often awoke from his naps reinvigorated, ready to tackle the rest of the day with full alertness and enthusiasm.
Edison also employed a unique napping technique to boost his creativity. He would nap while holding a steel ball in each hand, allowing the balls to wake him as he started to doze off. This technique, known as hypnagogia, has been shown to spark creativity by allowing the brain to slip gently into the first phase of sleep, a state of "loose cognition and weird associations."
Recent studies have validated Edison's technique, finding that people who napped for just 15 seconds in the first sleep stage tripled their chances of solving a math problem. This creative sweet spot during sleep onset provides a brief period of creativity and insight that can be harnessed to solve challenging problems.
While Edison's exact napping technique may not be practical for everyone, the benefits of napping are clear. Napping can help overcome creative blocks, improve problem-solving abilities, and enhance overall alertness and productivity. By understanding and harnessing the power of napping, we can unlock our creative potential and improve our cognitive performance.
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The impact of artificial light on sleep
Thomas Edison, the inventor of artificial light, was a staunch opponent of sleep. He claimed to sleep no more than four hours a day and expected the same of his employees. Edison believed that sleeping eight hours a day was a waste and even harmful. He popularised the notion that success and productivity depended on staying awake, influencing early psychologists and self-help gurus to advocate for less sleep. Edison also had a unique napping technique, where he would hold an object in his hand and allow himself to doze off briefly, hoping to capture the creative insights that occur in the twilight zone between sleep and wakefulness.
The availability of artificial light has significantly altered the natural light environment, especially during the evening and night hours. This has had a profound impact on sleep, influencing circadian rhythm, melatonin production, and sleep cycles. Circadian rhythm is an internal 24-hour clock that regulates various bodily processes, including sleep. It is strongly influenced by light exposure, with specific cells in the retina sensing light and sending signals to the brain to interpret the time of day.
Excessive or poorly timed artificial light exposure can disrupt the alignment of our circadian rhythm with the day-night schedule, leading to sleep disturbances and adverse health consequences. This misalignment can result in worsened metabolism, weight gain, cardiovascular issues, and potentially increased cancer risk. The suppression of melatonin secretion due to artificial light exposure at night is a significant factor in these negative outcomes.
The type and intensity of artificial light also play a role in its impact on sleep. Blue light, emitted by many LEDs, has a short wavelength that can affect the eye and brain differently compared to other types of light. Daylight, with its high illuminance, remains the most influential factor in regulating circadian timing. However, artificial light sources, such as incandescent, fluorescent, and LED lighting, can also affect sleep through their unique spectral distributions and illuminance levels.
While artificial light has been associated with negative consequences on sleep and health, it is important to recognise its potential benefits as well. Light therapy, for example, has been shown to be an effective and non-invasive therapeutic option for improving sleep, mood, and general well-being. Nonetheless, the widespread use of artificial light, from streetlights to electronic devices, has undoubtedly altered our sleep patterns and continues to be a subject of research and concern.
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Sleep patterns of Edison's staff
Thomas Edison was a staunch opponent of sleep. In an 1889 interview with Scientific American, Edison claimed he slept no more than four hours a day. He also encouraged all Americans to follow his lead, claiming that sleeping eight hours a night was a waste and even harmful. He is quoted as saying, "There is really no reason why men should go to bed at all." Edison also enforced this attitude towards sleep among his employees.
Edison's assistants were "expected to keep pace with him", as John Hubert Greusel wrote in 1913. Edison would begrudge the few hours his assistants slept, and they would often fall from sheer exhaustion. Edison's work ethic was so extreme that he would interview job candidates at 4 a.m. and cat-nap on lab benches between marathon work sessions.
Edison's attitude towards sleep was widely publicized, and he spent a considerable amount of energy promoting the idea that success depended on staying awake to stay ahead of the competition. Early newspaper accounts touted Edison's willingness to work at all hours, frequently racking up more than a hundred hours of work in a week. Edison also selected his subordinates based on their physical endurance.
Over time, children's books and magazines began to promote this type of Edisonian asceticism. One juvenile motivational text featured a photo of Edison with a group of workers identified as his "Insomnia Squad".
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Frequently asked questions
Thomas Edison was opposed to sleeping for long hours. He reportedly slept for only three to four hours each night and took multiple short naps throughout the day.
Edison believed that sleeping eight hours a night was a waste of time and even harmful. He once said, "There is really no reason why men should go to bed at all." He also enforced this ideology among his employees.
Edison's short naps helped him wake up reinvigorated and ready to work with full alertness and zest. He also believed that the phase between sleep and wakefulness is uniquely creative. He would often hold a ball in each hand while napping, and as he started to fall asleep, the balls would fall and wake him up, allowing him to remember thoughts from the twilight zone between sleep and wakefulness.
