Delve into the science, functions, and stages of sleep, explore sleep disorders and their impact, and learn about the essential role of sleep in overall health and well-being. Uncover the latest research, historical perspectives, cultural practices, and expert insights to deepen the understanding of this fundamental aspect of human existence. Key Takeaways Importance: Sleep is essential for physical and mental health, aiding in recovery, memory, and emotional regulation. Stages: The sleep cycle includes stages of non-REM and REM sleep, each playing a critical role in overall restfulness. Sleep Hygiene: Maintaining good sleep hygiene, such as a consistent sleep schedule and a comfortable environment, improves sleep quality. Factors: Diet, exercise, stress, and exposure to light impact sleep quality. Disorders: Conditions like insomnia and sleep apnea disrupt sleep and require management. Improvement: Practices like relaxation techniques and limiting screen time before bed enhance sleep quality.