REM, the Rapid Eye Movement stage of sleep happens when our eyes are moving fast; we are said to be dreaming in that stage.
NREM (Non-Rapid Eye Movement) is the stage of sleep when we are in deep sleep and are not moving. In this stage, our brain is able to clear toxins and consolidate memories.
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Sleeping can help us fight anxiety.
We are less worried or anxious after a good night's sleep, as compared to no sleep or even disturbed sleep.
Studies show that lack of sleep can lead to unfriendly and reclusive behavior, and has the same impact on the people around you. As a result, unslept people are lonelier.
Also, consider these sleep aids: exercise (it will make it easier for your brain and body to power down at night), temperature (the ideal range is usually between 65 to 70 degrees Fahrenheit/18 to 21 degrees Celsius) and sound (a quiet space is key for good sleep).