We write off restless nights as a way of life, perhaps not realizing that sleep ranks with diet and exercise as vital to our health. Author Nancy Foldvary-Schaefer, D.O., who heads the Cleveland Clinic’s Sleep Laboratory, points out that 70 million Americans are sleep-deprived, and most don’t recognize it for the serious problem that it is. The book explains why you can’t sleep or why you can’t stay awake. It describes how physicians diagnose sleep disorders and what they can do about them. This Cleveland Clinic Guide clarifies such important points as: • Why sleep isn’t a luxury, but a necessity • Why sleep is difficult or impossible for some of us • What is sleep? • What are the various disorders of sleep? • The sleep lab and diagnosis • Sleep apnea • Narcolepsy • Restless legs syndrome (RLS) • Insomnia