Sleep is a state of body's rest cycle. It is also known state of lessened consciousness and decreased physical activity. It causes the body to release hormones that can slow breathing and relax other muscles in the body. While sleeping our immune system releases inflammation fighting cytokines. A healthy amount of sleep is vital for "brain plasticity".
There are main 5 stages of sleep. Stage 1 is the drowsy stage that lasts for 5-10 minutes. Stage 2 is the light sleep stage that lasts 20 minutes. Stage 3 is the moderate sleep stage that lasts 10 to 20 minutes. Stage 4 is deep sleep stage that lasts 30 minutes. Stage 5 is Rapid Eye Movement Stage. This is usually the stage we dream. We fall into deep sleep during Non REM sleep.
A child is supposed to sleep for minimum 8 hours. An adult should get 6-8 hours of sleep. Though it depends upon an individual's body type and activity level, it is important to get their adequate amount of sleep.
Here are 10 reasons why one should get an adequate amount of sleep. Read more.
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