Matt Walker writes popular neuroscience about sleep, dreaming and the effects of sleep loss on memory, mood and physical health. Why We Sleep explains sleep stages, circadian rhythms and laboratory research on learning, emotional regulation and deprivation, then turns to practical habits that can support more regular sleep. The book is broad and persuasive in tone, combining experiments, clinical examples and public-health arguments for general readers. Some quantitative claims and interpretations in the book have been challenged by researchers and statisticians, so it is useful to distinguish the well-established importance of sleep from individual numerical claims. Walker's work fits sleep science, neuroscience and wellbeing, particularly for readers seeking an accessible overview rather than a clinical treatment guide. Read more Less
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