Why We Sleep

Matthew Walker, Director of UC Berkeley’s Sleep and Neuroimaging Lab, explores what he calls ‘the sleep loss epidemic’. In sleep, Walker argues, we are restoring and repairing our brains and bodies. Without it, all of the world’s top performance comes crashing down. Why We Sleep draws on decades of pioneering research to illuminate the vital importance of sleep, revealing that sleep is the single most effective thing we can do to reset our brains and bodies each day. It explains why cancer, Alzheimer’s disease, obesity, diabetes, poor mental health, heart disease, and many other illnesses are all intimately linked to a lack of sleep.