What does "NREM" stand for?

The term "NREM" stands for Non-Rapid Eye Movement sleep, which is a critical phase of the sleep cycle. NREM sleep is characterized by the absence of rapid eye movements and is subdivided into three stages: N1, N2, and N3. Each stage is associated with distinct physiological changes, including variations in brainwave activity, muscle tone, and heart rate.

During NREM sleep, the body undertakes essential restorative processes, such as physical recovery, memory consolidation, and hormone regulation. This phase of sleep is essential for overall health and well-being, influencing cognitive functions and emotional stability. Recognizing the importance of NREM sleep can help individuals understand sleep's foundational role in maintaining optimal functioning during waking hours.