Welcome to this episode, where we explore the fascinating and vital science of slumber based on the book Why We Sleep: Unlocking the Power of Sleep and Dreams by neuroscientist and sleep expert Matthew Walker. In today’s discussion, we uncover the hidden epidemic of sleep loss that is silently eroding our health, our safety, and our society.

Have you ever wondered why we actually need to sleep, or why you feel tired exactly when you do? We break down the two main forces that regulate your wakefulness: your 24-hour internal circadian rhythm and the buildup of "sleep pressure" driven by a chemical called adenosine. We'll also take you on a journey through the nightly sleep cycle, revealing how deep Non-Rapid Eye Movement (NREM) sleep acts as a secure "save button" for your daily memories, while Rapid Eye Movement (REM) sleep provides ...