Sleep is not a luxury—it is a biological necessity that underpins nearly every aspect of physical and mental health. In Why We Sleep, neuroscientist Matthew Walker unpacks decades of sleep science to show how sleep impacts learning, memory, emotional regulation, immune function, metabolic health, and athletic performance. Drawing on robust research, Walker explains how chronic sleep deprivation increases the risk of injury, illness, cognitive decline, and burnout, while adequate sleep enhances recovery, resilience, and long-term health.
Blending accessible storytelling with rigorous science, Why We Sleep reframes sleep as a foundational pillar of performance and longevity. Walker challenges modern cultural norms that glorify sleep loss and offers practical insights for improving sleep quality across the lifespan. This book is an essential resource for athletes, patients, and clinicians alike—highlighting why optimizing sleep is not just about feeling rested, but about protecting the brain, supporting recovery, and sustaining health for years to come.
