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How to Sleep Like a Caveman: Ancient Wisdom for a Better Night's Rest – A Sleep Scientist's Evolutionary Guide to Understanding and Improving Your Sleep

$46.60

Dresses Size Chart

Dress Size Chart (Inch)
DRESSES
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 34"-35"
S 2-4 33"-34" 26"-27" 36"-37"
M 6-8 35"-36" 28"-29" 38"-39"
L 10-12 37"-39" 30"-32" 40"-42"
XL 14 40"-42" 33"-35" 43"-45"
Dress Size Chart (cm)
DRESSES
SIZE IN CM
SIZE US / CAN BUST WAIST HIPS
XS 0 78.7-81.2 60.9-63.5 86.3-88.9
S 2-4 83.8-86.3 66-68.5 91.4-93.9
M 6-8 88.9-91.4 71.1-73.6 96.5-99
L 10-12 93.9-99 76.2-81.2 101.6-106.6
XL 14 101.6-106.6 81.2-88.9 109.2-114.3

Swimwear Size Chart

Dress Size Chart (Inch)
SWIMWEAR
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 33"-34"
S 2 33"-34" 26"-27" 35"-37"
M 4 35"-36" 28"-29" 37"-38"
L 6 37"-39" 30"-32" 39"-41"
XL 8 40"-42" 33"-35" 42"-44"

Shoes Size Chart

US EURO UK AUS JAPAN CHINA
5 35-36 3 3.5 21.5 35
5.5 36 3.5 4 22 35.5
6 36-37 4 4.5 22.5 36
6.5 37 4.5 5 23 36.5
7 37-38 5 5.5 23.5 37
7.5 38 5.5 6 24 37.5
8 38-39 6 6.5 24.5 38
8.5 39 6.5 7 25 38.5
9 39-40 7 7.5 25.5 39
9.5 40 7.5 8 26 39.5
10 40-41 8 8.5 26.5 40
11 41-42 9 9.5 27.5 41

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Fullfillonus #1202
1128 Lexington Ave, Bldg 4 E
Rochester, New York 14606
United States
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How to Sleep Like a Caveman: Ancient Wisdom for a Better Night's Rest – A Sleep Scientist's Evolutionary Guide to Understanding and Improving Your Sleep

How to Sleep Like a Caveman: Ancient Wisdom for a Better Night's Rest – A Sleep Scientist's Evolutionary Guide to Understanding and Improving Your Sleep

$46.60

What Are the Biggest Sleep Myths?

One of this book's greatest strengths is its systematic approach to debunking common sleep myths. For instance, the notion that everyone needs exactly eight hours of sleep is examined and nuanced—sleep needs vary based on age, genetics, and individual biology. The book also challenges the idea that waking during the night is problematic; historically, a “first sleep” and “second sleep” were the norm. Additionally, it questions the effectiveness of sleep aids and the belief that alcohol promotes restful sleep. Each myth is backed by scientific evidence and placed in evolutionary context, giving readers a clearer picture of what truly supports healthy rest.

What Can We Learn from Our Ancestors About Sleep?

The book argues that many modern sleep problems arise from a mismatch between our ancient biology and contemporary lifestyle. Before artificial lighting, screens, and rigid schedules, humans slept in patterns aligned with natural light-dark cycles. The author, a sleep scientist, draws on evolutionary biology to explain how our ancestors' sleep was likely more flexible and responsive to environmental cues. By understanding these ancestral patterns, readers may discover why forcing a single, uninterrupted block of sleep might not be the answer. Instead, the book suggests embracing a more natural, segmented sleep pattern to reduce anxiety and improve overall restfulness.

An Evolutionary Sleep Guide: At a Glance

If you've ever found standard sleep advice unhelpful, How to Sleep Like a Caveman offers a refreshing perspective rooted in our evolutionary past. Written by a sleep scientist, this book combines ancient wisdom with contemporary research to help you understand and enhance your rest. It challenges common misconceptions and provides practical strategies inspired by our ancestors. Whether you deal with insomnia, work shifts, or simply want deeper sleep, this guide explores why modern environments often clash with our biological rhythms—and what you can do about it.

The Science of Evolutionary Sleep

Beyond myth-busting, the book dives into the biology of sleep, covering circadian rhythms, melatonin, and the impact of light exposure. The author explains how our ancestors' exposure to natural light and darkness regulated their internal clocks, and how today's artificial lighting disrupts that delicate balance. The book also discusses diet, exercise, and stress from an evolutionary standpoint, exploring how ancestral lifestyles influenced sleep-wake cycles. This scientific foundation helps readers appreciate why certain modern habits hinder sleep and how small changes can realign with our biology.

Practical Tips for Better Sleep Inspired by Caveman Wisdom

Although grounded in science, the book offers immediately actionable advice. Recommendations include adjusting light exposure: seek bright light during the day and dim lights in the evening. Create a cool, dark, quiet sleep environment—reminiscent of a cave. The book also advocates for a consistent wake-up time, exposure to natural light soon after rising, and limiting screen use before bed. It discusses the potential benefits of a pre-sleep routine that mimics ancestral wind-down activities, such as gentle movement or storytelling. Readers are encouraged to experiment with their schedules and find what works for their unique biology.

Who Can Benefit from This Book?

How to Sleep Like a Caveman is ideal for anyone curious about sleep science and seeking a non-pharmaceutical approach. It is especially useful for those who have tried conventional advice without success, including night shift workers, new parents, and people with chronic insomnia. The book is written in an engaging, accessible style that balances humour with factual depth. Many readers find it changes their perception of sleep and helps them release unnecessary pressure. However, it does not replace medical advice; those with severe sleep disorders should consult a healthcare professional.

How Does This Book Stand Out from Other Sleep Guides?

Unlike many sleep books that focus solely on hygiene or supplements, this one offers a unique evolutionary lens. It doesn't promise a quick fix but instead aims to shift your understanding of what “normal” sleep really is. The author's credentials as a sleep scientist add credibility, and the book is thoroughly researched with references to academic studies. While some readers may find it detailed, many appreciate the depth. If you're tired of one-size-fits-all sleep advice and want a thought-provoking read, this book is a compelling choice.

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Your payment and personal information are protected using industry-standard SSL encryption, and all payments are securely processed through Shopify-approved payment providers. Prices are displayed in Canadian dollars, and applicable taxes are calculated at checkout.

Orders are generally processed within 1–3 business days. Standard delivery to Canada usually takes 5–15 business days after dispatch. Delivery times are estimates and may be affected by carrier delays, customs processing, weather conditions or other circumstances outside our control. Tracking information will be provided when available.

Return requests must be submitted within 30 days of delivery. Vitamins, supplements and health products must be unused, unopened, sealed and returned in their original packaging. Opened products cannot be returned unless they were delivered damaged, defective or incorrect.

Customers are responsible for return shipping costs for unwanted or change-of-mind returns, and a restocking fee of up to 20% may apply. Damaged, defective or incorrect items must be reported within 48 hours of delivery and may qualify for a replacement or full refund.

Refunds are issued to the original payment method after the returned item has been received and inspected. Refund processing may take up to 7 business days. Before returning any product, please contact our customer support team for return authorization. Returns sent without prior approval may be delayed or rejected.

Approved returns must be sent to:

Return Address Fullfillonus #1202
1128 Lexington Ave, Bldg 4 E
Rochester, New York 14606
United States

Refused or unclaimed shipments may only be refunded after they are returned and inspected. Original shipping charges, return shipping costs, customs fees and carrier charges may be deducted from the refund where applicable.

Vitamin4CA.com is operated by Cloverlight LLC.

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