Stages of Sleep and Sleep Cycles
Although it’s possible for some people to skip sleep in one day, it’s a normal part of everyone’s daily routine. Getting an adequate amount of rest every day helps rejuvenate the body and mind. Therefore, understanding the different stages of sleep is important to ensure you get enough slumber to improve your well-being.
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An ideal sleep cycle keeps the body working properly while the mind stays alert. If you don’t get enough sleep, there will be consequences. According to these sleep facts, 15 percent of people sleepwalk at night. But at what stage of sleep does sleepwalking occur is something you will learn from this short guide. Plus, you will be introduced to the stage of sleep psychology in order to get a better understanding of our main topic.
So what is a sleep cycle?
A sleep cycle refers to a series of different stages of NREM and REM sleep before it begins with NREM sleepover again.
Normal sleep cycles typically start every 90 minutes to 120 minutes, which means there are four cycles to five sleep cycles for every sleep time.
From this sleep cycle definition, you will understand the more complex ideas on how sleep work and how it affects the body.
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How Your Sleep Cycle Changes with Age
As you age, the stages of sleep also change. In fact, most adults experience a harder time to fall asleep due to aging. Some would have longer awake time at night and wake up earlier the next morning. The reason for this is that older people don’t get enough deep sleep. As a result, they get more awake time than sleep time.
TL;DR
Here’s a summary of the key points for the stages of sleep:
A sleep cycle refers to a series of different stages of NREM and REM sleep before it begins with NREM sleepover again.For younger adults, the human sleep cycle repeats itself about every 90 to 110 minutes.The human brain cycles into two main states of sleep, they are rapid eye movement or REM sleep and non-rapid eye movement or non-REM sleep.Stage 1 sleep is the transitional stage that occurs when you find yourself in and out of your consciousness.Stage 2 sleep is an NREM phase which is also under light sleep as the first stage.Stage 3 sleep is characterized by deep sleep and is often the most difficult stage to get awakened.Stage 4 involves periods of Slow Wave Sleep or SWS, a non-REM phase which is basically the deepest sleep an individual’s body may enter through the course of a night.REM sleep, also known as the Stage 5 sleep, is the phase where the brain is extremely active.In the stages of sleep, only Stage 5 is REM sleep, the rest are considered NREM. Stages 1 and 2 are considered light sleep while stage 3 is a deep sleep.Of the NREM sleep stages, light and deep sleep are the longest for people in their early 20s which occurs 4 to 7 hours every night.Most dreaming occurs in REM sleep due to heightened and desynchronized waves in the brain which is like being awake.A good sleep pattern begins every 90 minutes which results in five cycles for every sleep time.Light sleep is important since it basically takes more than 50 percent of your night.Older people don’t get enough deep sleep drive. As a result, they get more awake time than sleep time.
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To know more about the importance of sleep, check out these sleep product reviews and health information.
