Unijaksotit

Unijaksotit refers to a Finnish term that translates to "uni" meaning sleep and "jaksot" meaning periods or cycles. This concept is commonly used in discussions about sleep and refers to the cyclical nature of sleep stages throughout the night. Sleep is not a uniform state but rather consists of different phases that repeat in a pattern. These cycles typically last around 90 to 110 minutes.

Within each sleep cycle, there are two primary types of sleep: non-rapid eye movement (NREM) sleep and rapid eye movement (REM) sleep. NREM sleep is further divided into several stages, progressing from lighter sleep to deeper sleep. REM sleep is characterized by increased brain activity, vivid dreaming, and temporary muscle paralysis. As the night progresses, the duration of REM sleep periods generally increases, while the deeper stages of NREM sleep become shorter. Understanding these unijaksotit is crucial for comprehending sleep architecture and factors that can influence sleep quality. Disruptions to these natural cycles can lead to feeling unrefreshed upon waking.