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The Harvard Medical School Guide to a Good Night's Sleep

$52.62

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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Return requests must be submitted within 30 days of delivery. Vitamins, supplements and other health-related products must be unused, unopened, sealed and returned in their original packaging.

Opened or used products cannot be returned for health and safety reasons, unless the item arrived damaged, defective or incorrect. Damaged, defective or incorrect items should be reported within 48 hours of delivery.

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Approved Return Address
Fullfillonus #1202
1128 Lexington Ave, Bldg 4 E
Rochester, New York 14606
United States
Please contact us before sending a return. Returns sent without prior authorization may be delayed, rejected or returned to the sender.

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The Harvard Medical School Guide to a Good Night's Sleep

The Harvard Medical School Guide to a Good Night's Sleep

$52.62

The Science of Sleep and Why It Matters

Sleep is far from a passive state—it's an active process that supports learning, memory, emotional regulation, and physical repair. During sleep, the body clears toxins, consolidates memories, and regulates hormones. Chronic sleep deprivation can impair cognitive function, weaken the immune system, and increase the risk of serious health conditions such as cardiovascular disease, diabetes, and obesity. Understanding the science behind sleep empowers you to make informed choices. This guide breaks down complex concepts into easy-to-understand explanations, helping you take control of your sleep health.

What Sets This Guide Apart

Many sleep books offer quick fixes, but this guide digs deeper by providing a solid foundation in sleep science. It relies on research and clinical experience rather than gimmicks or unproven remedies. The book is structured to be accessible to a wide audience, from newcomers to sleep science to those seeking a refresher. Each chapter builds on the previous one, creating a cohesive understanding of how sleep works and how to improve it naturally.

Practical Steps for Better Sleep

The book emphasizes actionable steps that fit into real life. It discusses the importance of a consistent sleep schedule, the role of light exposure, and how to create a calming bedtime routine. It also explores how diet, exercise, and stress management can positively influence sleep. The recommendations are presented in a way that allows you to customize them to your lifestyle. The goal is not a one-size-fits-all solution but to give you the knowledge to design a personalized sleep improvement plan.

A Trusted Resource for Sleep Health

Sleep is a fundamental pillar of health, yet many people struggle to get the quality rest their bodies and minds need. The Harvard Medical School Guide to a Good Night's Sleep is a comprehensive resource that combines the authority of Harvard Medical School with practical, evidence-based advice. Whether you are dealing with occasional sleeplessness or long-term sleep challenges, this book provides the insights and tools to help you achieve restorative sleep.

Making the Most of This Guide

This guide is designed for flexible use. You can read it from start to finish for a comprehensive overview, or jump to specific chapters that address your most pressing concerns. It includes self-assessment tools to help you evaluate your current sleep habits and identify areas for improvement. Checklists and summaries make it easy to revisit key points. For best results, implement changes gradually and consult with a health care professional if you have underlying health issues.

Who Can Benefit

This book is ideal for anyone who wants to improve their sleep quality, whether they are healthy sleepers looking to optimize further or individuals struggling with sleep disorders. It is also a valuable resource for health care providers, such as doctors and therapists, who want evidence-based information to share with patients. The respectful, non-judgmental tone makes it a supportive guide for anyone committed to better sleep.

Final Thoughts on Your Sleep Journey

Improving sleep is a marathon, not a sprint. This book provides the roadmap and tools you need to make lasting changes. Remember that good sleep is a cornerstone of overall well-being, and investing in it pays dividends in every aspect of your life. Always consult a qualified health care professional for personalized medical advice.

This book is for educational purposes and does not replace professional medical advice. Always consult a health care provider for sleep-related health concerns.

Important Information

Things You Need to Know

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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