Sleep is essential for health, helping your brain reset, improve memory, boost mood, and repair your body every single night.
Humans spend about one third of their lives sleeping, showing how important rest is for survival and daily performance overall.
Dreams occur during REM sleep when brain activity increases, often creating vivid stories, emotions, and memories that feel completely real.
Lack of sleep can weaken your immune system, reduce focus, increase stress levels, and raise risk of health problems later.
Your body follows a circadian rhythm, a internal clock that controls sleep and wake cycles based on light and darkness.
Sleeping less than six hours can harm heart health, increase weight gain, and negatively affect your mental wellbeing over time.
Power naps of twenty minutes can improve alertness, mood, and productivity without causing grogginess, making them useful during daytime schedules.
Blue light from phones and screens can disrupt melatonin production, making it harder to fall asleep and reducing sleep quality.