Understanding Sleep Stages and Their Impact

Research on sleep patterns has unveiled intriguing insights into human health. Studies indicate that people typically go through five stages of sleep, which are categorized into two types: non-REM and REM sleep. Non-REM sleep includes stages 1, 2, and 3, while stage 4 is considered deep sleep, and REM sleep facilitates dreaming. A significant finding is that most restorative functions occur during the deep sleep stage. Furthermore, the duration of each sleep cycle, which can vary in length from 90 to 120 minutes, also influences physical and mental well-being. Disruptions during any stage can lead to adverse effects, such as impaired memory and concentration. Researchers emphasize the necessity of a regular sleep schedule to optimize health outcomes.