Dr. Merijn van de Laar, a sleep therapist and author of "How to Sleep Like a Caveman," explores sleep based on ancestral practices. He argues that modern sleep troubles stem from societal expectations rather than biology. Van de Laar reveals that hunter-gatherers sleep less yet remain well-rested, sharing insights on sleep cycles, light exposure, and temperature management. He challenges the eight-hour sleep myth, suggests intentional sleep deprivation for better rest, and emphasizes that a relaxed mindset can improve overall sleep quality.
Understanding that our ancestors' flexible sleep patterns can alleviate modern anxiety surrounding sleep requirements is crucial for better rest.
Utilizing Cognitive Behavioral Therapy techniques and creating a calming wind-down routine can significantly improve one's sleep health and efficiency.
Deep dives
Declining Sleep Quality in Modern Society
Despite advancements in sleep technology, such as optimized mattresses and sleep trackers, people's reported sleep quality has significantly declined over the past few decades. This suggests that even though individuals are not sleeping less, they are increasingly dissatisfied with their sleep experience. Experts argue that this dissatisfaction may be rooted in modern expectations of sleep quality, which may not align with our natural sleep patterns. Returning to ancient practices and understanding how our prehistoric ancestors slept can provide valuable insights for improving our modern sleep experience.
Insights from Hunter-Gatherer Sleep Patterns
Research on hunter-gatherer societies, particularly the Hadza tribe in Tanzania, reveals that their sleep duration is shorter than commonly believed, averaging between 6.2 to 6.5 hours per night. Interestingly, they are often awake for about two hours during the night, which they do not perceive as problematic. This contrasts sharply with modern Western expectations that demand a continuous block of sleep, often leading to stress and frustration for many. Embracing these flexible sleep patterns and understanding the normalcy of waking periods can alleviate concerns surrounding insomnia.
Rethinking Sleep Duration Myths
Many people believe they need to sleep for eight hours each night to maintain good health; however, studies suggest that the optimal amount of sleep may be around seven hours. The increased pressure to achieve this ideal often contributes to anxiety and performance expectations surrounding sleep. On the contrary, hunter-gatherers do not adhere to strict sleep schedules, demonstrating that individuals can still function well on less sleep than traditionally recommended. This understanding can help normalize variations in sleep needs and reduce stress related to meeting societal expectations.
Effective Strategies for Improving Sleep
Cognitive Behavioral Therapy for Insomnia (CBTI) and sleep restriction techniques have proven to be effective methods for treating insomnia. This approach encourages individuals to restrict their time in bed initially, allowing the body's natural sleep drive to build and improve overall sleep efficiency. Additionally, creating a wind-down routine before bed and ensuring a suitable sleep environment—including managing light exposure and maintaining an appropriate temperature—further supports better sleep quality. Ultimately, fostering a calmer attitude toward one's sleep struggles and reducing perfectionism can lead to significant improvements in sleep health.
For several decades, people's reported sleep quality has declined. This, despite the fact that specially optimized sheets, mattresses, and sleep trackers have emerged during that time, and despite the fact that the amount of time people are sleeping hasn't decreased for over fifty years.
In other words, people aren't sleeping less than they used to, but are less happy about their sleep than ever before.
My guest would say that to improve our experience of sleep, we'd be better off looking past the reams of modern advice out there and back in time — way, way back in time.
Today on the show, Dr. Merijn van de Laar, a recovering insomniac, sleep therapist, and the author of How toSleep Like a Caveman: Ancient Wisdom for a Better Night's Rest, will tell us how learning about our prehistoric ancestors' sleep can help us relax about our own. He explains that the behaviors we think of as sleep problems are actually normal, natural, and even adaptive. We talk about why hunter-gatherers actually sleep less than we think we need to, how their natural wake periods during the night might explain our own sleep patterns, the methods they use to get better sleep, and why our modern efforts to optimize sleep could be making it worse. Merijn shares when it's okay to use a smartphone before bed, the myth that you have to get eight hours of sleep a night, how to intentionally use sleep deprivation to improve your sleep, and more.