Izon ✨

Many people today assume that a full, uninterrupted night's sleep is the natural way humans should rest. However, studies into historical and anthropological evidence suggest that segmented sleep—dividing the night into two distinct sleep phases separated by a waking period—was a common pattern for our ancestors. This historical sleep behavior may offer insights into how our circadian rhythms and evolutionary heritage influence our sleep today. Before the widespread use of artificial lighting, people often went to bed shortly after sunset and woke naturally for an hour or two in the middle of the night. During this time, they were often active, using the quiet hours for reflection, prayer, creativity, or household tasks. This waking period was not seen as insomnia but rather as a natural part of the sleep cycle. Modern research indicates that our bodies may be wired for such segmented sleep patterns. The hormone melatonin, which regulates sleep, has levels that support a first sleep phase before midnight followed by a quieter alertness period during the night. For some, the pressure to adhere to continuous sleep for 7-8 hours may lead to stress when interrupted sleep occurs naturally, potentially causing sleep disorders. Understanding these evolutionary sleep truths can help people be kinder to themselves when waking at night and reshape societal norms about sleep health. Instead of forcing oneself to endure continuous sleep, embracing quiet wakefulness moments could lead to improved overall rest and wellbeing. This discussion ties into broader science debates about human biology and lifestyle. By reflecting on how our ancestors lived and slept, we gain perspective on contemporary sleep challenges and opportunities to optimize our patterns according to our own biology rather than purely external demands.