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Life Time: Your Body Clock and Its Essential Roles in Good Health and Sleep

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A guide to using the science of the body clock to promote better sleep, better health, and better thinking
 
“Full of surprising and useful facts. . . . Unlike many science books with similar subtitles, it really might ‘revolutionise’ your life.”—James McConnachie, Times (UK)
 
“A comprehensive manifesto for living in harmony with our body clocks, penned by someone who has devoted his career to studying them.”—Financial Times
 

Biological clocks are embedded in every aspect of human biology, guiding us toward the prime times of day to sleep, eat, think, and work. Award-winning scientist Russell Foster brings decades of study to this journey through the circadian rhythms that dominate our days and nights. He shows how the realities of 24/7 life—including night-shift work, overbooked calendars, and caring for newborns—disrupt the body clock, taking a toll on sleep and on mental and physical health.
 
By dismantling long-standing myths and citing cutting-edge science, Foster empowers readers to get back into rhythm and live healthier, sharper lives: scheduling meals to prevent obesity and diabetes; timing medications to increase their effectiveness; getting better sleep through exposure to natural light; and much more. “If you want to embrace life,” Foster writes, “then embracing biological time will help you do this.”

ISBN-13: 9780300274059

Media Type: Paperback

Publisher: Yale University Press

Publication Date: 08-22-2023

Pages: 480

Product Dimensions: 5.10(w) x 8.10(h) x 1.30(d)

Russell Foster is professor of circadian neuroscience, director of the Sleep and Circadian Neuroscience Institute (SCNi), and head of the Nuffield Laboratory of Ophthalmology at the University of Oxford. An acclaimed scientist, Foster has been elected to the Royal Society.

Table of Contents

List of Figures ix

List of Tables x

List of Abbreviations xi

Introduction i

1 The Day Within 17

2 A Heritage from Our Cave Days 32

3 The Power of the Eye 51

4 Out of Time 70

5 Biological Chaos 93

6 Back in the Rhythm 117

7 The Rhythm of Life 144

8 The Seven Ages of Sleep 168

9 Time Out of Mind 200

10 When to Take Drugs 224

11 A Circadian Arms Race 254

12 Eating Time 272

13 Finding Your Natural Rhythm 287

14 The Circadian Future 308

Appendix I Studying Your Own Biological Rhythms

Part I Developing a Sleep Diary 330

Part II Chronotype Questionnaire 331

Appendix II The Key Elements and Overview of the Immune System 337

References 343

Acknowledgements 431

Index 433