Sleep is a vital biological process that helps the body and mind rest, repair, and rejuvenate. Adults typically need 7-9 hours of quality sleep per night for optimal health. Sleep occurs in cycles, including REM (rapid eye movement) and non-REM stages, each playing a role in memory consolidation, physical recovery, and emotional regulation. Poor sleep or sleep disorders like insomnia, sleep apnea, and restless leg syndrome can lead to health issues such as fatigue, weakened immunity, cognitive decline, and increased risk of chronic diseases. Good sleep hygiene—consistent sleep schedules, a comfortable environment, and limiting screens before bed—supports restorative sleep and overall well-being.
