Why We Sleep: Unlocking the Power of Sleep and Dreams by Matthew Walker, Ph.D., explores the vital role of sleep in maintaining health and well-being. Walker delves into how sleep affects memory, learning, and emotional regulation, while also addressing the consequences of sleep deprivation. The book highlights the impact of sleep on the immune system, heart, and brain, and offers practical tips for improving sleep quality. With insights into the science of dreams, this book is a must-read for anyone looking to understand and improve their sleep habits.