Sleep is a fundamental human need. It's as vital to our health and well-being as food, water, and air. Yet, in our fast-paced, always-on society, sleep often falls by the wayside. We sacrifice rest for productivity, entertainment, or simply because we struggle to switch off at night. This is where the concept of sleep hygiene comes into play. Sleep hygiene refers to the practices and habits that we can adopt to promote better quality sleep. It's about creating an environment and a routine that signals to our bodies: it's time to rest. But what does good sleep hygiene look like? How can we define sleep hygiene in a way that's practical and applicable to our daily lives? This article aims to answer these questions. We'll delve into the science of sleep, the importance of sleep hygiene, and the consequences of neglecting this crucial aspect of our health. We'll also provide a comprehensive sleep hygiene checklist, offering actionable advice to help you improve your sleep quality. Whether you're a health coach, a science journalist, or a biohacker, this guide will equip you with the knowledge and tools you need to optimize your sleep and, by extension, your overall well-being.