And your great, great- grandparents. But once you go back before the 1. Your ancestors slept in a way that modern sleepers would find bizarre – they slept twice. And so can you. The History. The existence of our sleeping twice per night was first uncovered by Roger Ekirch, professor of History at Virginia Tech. His research found that we didn.
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We used to sleep in two shorter periods, over a longer range of night. This range was about 1. References are scattered throughout literature, court documents, personal papers, and the ephemera of the past.
What is surprising is not that people slept in two sessions, but that the concept was so incredibly common. Two- piece sleeping was the standard, accepted way to sleep.“It’s not just the number of references – it is the way they refer to it, as if it was common knowledge,” Ekirch says. An English doctor wrote, for example, that the ideal time for study and contemplation was between ?
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Pretty much what you might expect. Most stayed in their beds and bedrooms, sometimes reading, and often they would use the time to pray. Religious manuals included special prayers to be said in the mid- sleep hours. Others might smoke, talk with co- sleepers, or have sex.
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Some were more active and would leave to visit with neighbours. As we know, this practice eventually died out.
Ekirch attributes the change to the advent of street lighting and eventually electric indoor light, as well as the popularity of coffee houses. Author Craig Koslofsky offers a further theory in his book Evening’s Empire. With the rise of more street lighting, night stopped being the domain of criminals and sub- classes and became a time for work or socializing. Two sleeps were eventually considered a wasteful way to spend these hours.
No matter why the change happened, shortly after the turn of the 2. Until about 1. 99. The Science. Two sleeps per night may have been the method of antiquity, but tendencies towards it still linger in modern man. There could be an innate biological preference for two sleeps, given the right circumstances. In the early . Rather than staying up and active the usual sixteen hours per day, they would stay up only ten.
The other fourteen hours they would be in a closed, dark room, where they would rest or sleep as much as possible. This mimics the days in mid- winter, with short daylight and long nights. At first, the participants would sleep huge stretches of time, likely making up for sleep debt that. Once they had caught up on their sleep though, a strange thing started to happen. They began to have two sleeps. Over a twelve hour period, the participants would typically sleep for about four or five hours initially, then wake for several hours, then sleep again until morning. They slept not more than eight hours total.
The middle hours of the night, between two sleeps, was characterized by unusual calmness, likened to meditation. This was not the middle- of- the- night toss- and- turn that many of us experienced. The individuals did not stress about falling back asleep, but used the time to relax. Russell Foster, professor of circadian neuroscience at Oxford, points out that even with standard sleep patterns, this night waking isn. He and his family intentionally went an entire month with no electric light. In the winter months, this meant a lot of darkness and a lot of sleep. Two sleeps may leave you feeling more rested, but this could simply be because you are intentionally giving yourself more time to rest, relax, and sleep.
Giving the same respect to the single, eight- hour sleep should be just as effective. Note too that two sleeping needs a lot of darkness . The greater levels of daylight during summer and other seasons would make two sleeping difficult, or even impossible. Perhaps two sleeping is merely a coping mechanism to get through the long, cold, boring nights of the winter. So long as we give our sleep the time and respect it needs, getting the .
He did the same thing every night. Update. Well this article proved exceedingly popular! Thank you to everyone who visited, or took the time to leave a comment. I would encourage new visitors to have a read through the comments below for some interesting ideas and perspectives. I learned two things in particular: 1. This is far more common that I thought.
A lot of commenters either practice, or used to practice this kind of sleep. Another possible reason for two sleeps is tending the fire during the night. Several clever readers noted that in order to keep a fire running through the night, we would need to get up and tend it. Commenters also raised questions regarding non- European and non- Western cultures, which we’ll be digging into in future articles. For anyone who wants to learn more about this kind of sleep, I’ve linked below to two books referenced in the writing of this article, available on Amazon.