![]() ![]() A person may go through four to five cycles of REM sleep in one night, although longer periods of REM sleep are more likely to occur during the second half of the night. Research states that REM sleep takes up about 20% to 25% of total sleep time and happens every 90 to 120 minutes of a night’s sleep. According to the American Sleep Association, three things are associated with REM sleep: limited to no muscle activity (known as muscle atonia, thought to occur so we don’t act out our dreams), rapid eye movements, and dreams. REM sleep, the state where dreams are most likely to occur, is a sleep state that is thought to generally regulate emotions and consolidate memory. Most healthy people cycle through four stages of sleep throughout the night: NREM (non-rapid eye movement) 1, NREM 2, NREM 3 (AKA, deep sleep), and REM sleep. In this case, when your body has the chance, it’ll spend more time in REM sleep (what is known as REM rebound) to make sure it pays up your REM sleep debt. The same happens when you don’t get adequate rapid eye movement (REM) sleep. In that case, it’ll start adding up your sleep debt and let many other processes in your body pay for it (in excessive daytime sleepiness, fatigue, irritability, confusion, mood swings, sluggishness, lower attention span, etc.) until you start having a sufficient amount of sleep quantity (around 7-9 hours, for most healthy adults). Sleep is a complex and essential process that helps the body refresh and recharge itself. Suppose, for some reason, your body starts lacking its needed sleep duration. Have you ever woken up feeling lost as what day of the month or time of the day it is because you had a very long and eventful (thanks to the adventurous dream you also had) sleep? You probably experienced a “REM rebound” - a period of increased rapid-eye-movement (REM) sleep due to prior periods of sleep deprivation or other stressors. Share on Twitter Share on Facebook Share on Linkedin Share via Email ![]()
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