An authoritative and accessible guide to what happens when we shut our eyes at night  We spend a third of our lives in bed, but how much do we really understand about how sleep affects us? In the past forty years, scientists have discovered that our sleep (or lack of it) can affect nearly every aspect of our waking lives. Poor sleep could be a sign of a disease, the result of a vitamin or iron deficiency, or the cause of numerous other problems, both sleeping and waking. Yet many people, even medical personnel, are unaware of the dangers of poor sleep. Enter Dr. Meir Kryger, a world authority on the science of sleep, with a comprehensive guide to the mysteries of slumber that combines detailed case studies, helpful tables, illustrations, and pragmatic advice.  Everyone needs a good night’s sleep, and many of us will experience some difficulty sleeping or staying awake over the course of our lifetimes (or know someone who does). Kryger’s comprehensive text is a much‑needed resource for insomniacs; for those who snore, can’t stay awake, or experience disturbing dreams; and for the simply curious. Uniquely wide ranging, The Mystery of Sleep is more than a handbook; it is a guide to the world of sleep and the mysterious disorders that affect it.