Why We Sleep
In Matthew Walker’s eye-opening book *Why We Sleep*, he pulls back the curtain on one of humanity’s most overlooked vital functions. As sleep deprivation reaches epidemic levels across developed nations—with two-thirds of adults skipping the recommended 8 hours—Walker lays bare the catastrophic toll: doubled cancer risk, heightened Alzheimer’s vulnerability, disrupted metabolism, and even increased mortality from fatigue-related accidents. He breaks down the science of sleep, explaining how our circadian rhythm and sleep pressure work in tandem to regulate rest, and demystifies the two core sleep stages: NREM, which handles memory consolidation and physical repair, and REM, the dream-filled phase that processes emotions and sparks creativity. Walker also explores sleep’s evolution, its changing role from fetal development to old age, common sleep disorders like insomnia and sleepwalking, and the dangerous myth that prescription sleeping pills are a safe fix. With actionable insights and rigorous research, this book isn’t just a guide to better rest—it’s a wake-up call to prioritize sleep as the foundation of long-term health.