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Scientists have long believed that sleep is a simple stage of rest, but in fact it is not. When we sleep, many different processes take place in our body.
There are 4 stages of sleep that change throughout the night. For example, it is easy to wake up during REM sleep, but not during deep sleep.
During sleep, our brain does a great job of organizing information. Lack of sleep will greatly affect our concentration. If you don't get enough sleep for a long time, it can cause big health problems and shorten your life.
Sometimes during sleep it seems to us that we are falling, so we twitch. This signal is given by the brain. During insomnia, some advise counting sheep, but in reality this is unlikely to help you.
Babies need 16 to 18 hours of sleep, teens over 9, and adults 7 to 8.
In order to sleep better, you should go to sleep and wake up at the same time, as well as not eating at night and avoiding carbonated drinks and coffee. Don't exercise or watch scary movies at night, instead read or take a shower.