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What Are The 5 Stages of Sleep?

What Are The 5 Stages of Sleep?
The five stages of sleep are a natural part of our sleep cycle, and they are necessary for our physical and mental restoration. Each stage plays a specific role in helping our bodies and minds recover from the day's activities.
Sleep is divided into five stages, each characterized by different brain waves and physiological patterns. 
The five stages of sleep are:
  1. Stage 1 (N1) - This is the lightest stage of sleep, also known as "drowsy sleep." During this stage, our breathing and heart rate slow down, and our muscles relax. It is the transitional stage between wakefulness and sleep, and it lasts for about 5-10 minutes.
  2. Stage 2 (N2) - This is the stage where our brain waves slow down and our body temperature drops. Our muscles continue to relax, and our heart rate and breathing become even slower. This stage makes up about 50% of our total sleep time, and it lasts for about 20-25 minutes.
  3. Stage 3 (N3) - This is the deep sleep stage, also known as "slow-wave sleep." During this stage, our brain waves become even slower, and it is more difficult to wake up. This stage is important for physical and mental restoration, and it lasts for about 30-40 minutes.
  4. Stage 4 (REM) - This is the stage where we have Rapid Eye Movement (REM) sleep. During this stage, our brain waves become similar to those of wakefulness, and our eyes move rapidly back and forth. This stage is when we have most of our vivid and intense dreams, and it lasts for about 10-25 minutes.
  5. The cycle of these stages repeats throughout the night. The first REM period occurs about 90 minutes after falling asleep, and each REM period gets longer as the night progresses.
It's important to note that the amount of time spent in each stage of sleep can vary depending on the person and their age.
In summary, the five stages of sleep are a natural process that our body goes through to repair and restore itself. Each stage plays an important role in helping us function well physically and mentally during the day.
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