The concept of a single, continuous block of sleep might seem like the only way to rest. But did we used to have two sleeps? This question delves into a fascinating aspect of human history and sleep science, suggesting that our modern sleep habits might not be as ancient as we think.
The Myth and Reality of Biphasic Sleep
The idea that our ancestors practiced “segmented sleep” or “biphasic sleep,” where they slept in two distinct phases, has gained traction in recent years. This theory suggests that before the widespread adoption of artificial lighting, people would typically go to sleep for a few hours after sunset, wake up for a period, and then go back to sleep for the remainder of the night. This interlude wasn’t necessarily about insomnia but was a period for reflection, prayer, or quiet activities. The importance of understanding these historical sleep patterns lies in their potential to shed light on our own biological rhythms and how they’ve been influenced by technology.
Evidence for this ancient sleep pattern comes from various sources:
- Historical texts from ancient Greece and Rome that mention a “first sleep” and a “second sleep.”
- Sociological studies of pre-industrial societies that continued to observe biphasic sleep.
- The potential for this sleep pattern to align more closely with our natural circadian rhythms, which have been disrupted by electric light.
Here’s a breakdown of what this segmented sleep might have looked like:
- First Sleep: This typically occurred shortly after dusk.
- Waking Period: A period of 1 to 2 hours in the middle of the night.
- Second Sleep: Another period of sleep until dawn.
Some researchers even propose that this biphasic pattern was more common than we realize:
| Sleep Phase | Approximate Timing | Potential Activities |
|---|---|---|
| First Sleep | After sunset | Rest, quiet contemplation |
| Waking Period | Midnight to 2 AM | Reading, praying, socializing, chores |
| Second Sleep | Before dawn | Deeper rest |
While the idea of two sleeps is compelling, it’s important to note that not all historical or anthropological evidence definitively proves this was a universal practice. However, the arguments presented offer a fascinating alternative to our current understanding of sleep.
To delve deeper into this intriguing historical sleep practice, we encourage you to explore the sources cited in the research that explores this phenomenon. These resources offer detailed accounts and further evidence that will enrich your understanding of how humans have slept throughout history.