Adequate sleep is essential for growth, restoration, brain health, and memory processing, with adults needing 7-8 hours, while children and teens require 9-11 hours. Poor sleep can lead to numerous health issues, such as weight gain, a suppressed immune system, and increased stress hormones, among others. Implementing good sleep hygiene practices, like establishing a consistent wake-up time and minimizing distractions in the bedroom, can enhance sleep quality and overall health.