Uncovering the Secrets of Sleep: Its Stages, Cycles, and Functions
Sleep is a vital part of our lives. It is essential for our physical and mental health. Sleep deprivation can lead to a variety of health problems.
We still have a lot to learn about sleep. What are the stages, cycles, and functions of sleep? How much do we know about the science of sleep?
In this chapter, let us explore some of the basic things we know about sleep.
Stages of Sleep
There are three main stages of sleep:
- Light sleep: In this stage, you are aware that you are asleep, and you can easily wake up.
- Deep sleep: In this stage, you are asleep deeply, and it is very difficult to wake you up.
- REM sleep: In this stage, your eyes move rapidly, and you dream.
Sleep Cycles
Sleep occurs in cycles. Each cycle consists of all three stages. A typical cycle lasts for 90 to 120 minutes.
Functions of Sleep
Sleep performs a number of important functions:
- Restoring the body: During sleep, your body repairs its cells and heals wounds.
- Cleaning the brain: During sleep, your brain removes unnecessary toxins and stores new information.
