I really enjoyed the book Why We Sleep by Matthew Walker. It is a popular science book that explores the science of sleep, arguing it's a crucial pillar of health, as important as diet and exercise, and that sleep deprivation is a major public health issue. Walker, a neuroscientist, explains how sleep impacts learning, memory, mood, metabolism, and disease prevention, while also providing practical advice for improving sleep quality, debunking myths about alcohol and caffeine, and highlighting the dangers of insufficient sleep.