NonREMSchlaf

NonREMSchlaf, also known as Non-Rapid Eye Movement Sleep, is a stage of sleep distinct from REM sleep. It is characterized by reduced physiological activity, including slower breathing and heart rate, and decreased brain activity compared to wakefulness. Non-REM sleep is further divided into three stages: N1, N2, and N3.

Stage N1 represents the lightest stage of sleep, transitioning from wakefulness. During N1, individuals may experience muscle twitches and easily awaken. Stage N2 is a deeper sleep where the body temperature drops, and heart rate slows further. Brain waves become slower and more synchronized. Stage N3, also known as slow-wave sleep or deep sleep, is the most restorative stage. This is when the body repairs tissues, builds bone and muscle, and strengthens the immune system. Brain activity is at its slowest during N3.

The sleep cycle typically begins with Non-REM sleep, progressing through its stages before entering REM sleep. A full sleep cycle, encompassing both Non-REM and REM sleep, repeats several times throughout the night. The duration and proportion of each Non-REM stage can vary based on age and other factors. Adequate Non-REM sleep is crucial for physical restoration, memory consolidation, and overall health. Disruptions to Non-REM sleep can lead to various health issues.