Sleep science is the study of sleep and its various stages, including REM (Rapid Eye Movement) and NREM (Non-Rapid Eye Movement) sleep. Researchers investigate how sleep affects physical health, mental well-being, and cognitive functions. They also explore the biological processes that regulate sleep patterns, such as the circadian rhythm, which is influenced by light and darkness. Understanding sleep science helps identify sleep disorders like insomnia and sleep apnea. By studying these conditions, scientists can develop effective treatments and improve sleep quality. This field combines insights from psychology, neuroscience, and medicine to enhance our understanding of the importance of sleep in daily life.