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  REM - Rapid Eye Movement

REM sleep is the sleep stage in which dreaming occurs. When you enter into REM sleep, your breathing becomes fast, irregular and shallow. Your eyes will move rapidly and your muscles become immobile. Heart rate and blood pressure increase. About 20 percent of sleep is REM sleep for adults.

REM sleep is also the phase of sleep in which you dream. This sleep phase begins about 70 to 90 minutes after you fall asleep. The first sleep cycle has a shorter phase of REM sleep. Toward morning, the time spent in REM sleep increases and the deep sleep stages decrease.

Researchers do not fully understand REM sleep and dreaming. They know it is important in the creation of long-term memories. If a person’s REM sleep is disrupted, the next sleep cycle does not follow the normal order, but often goes directly to REM sleep until the previous night’s lost REM time is made up.

Sleep well!