Can't a person dream while sleeping, and can't it be for more than a few seconds?
Many people say that some people dream while sleeping in less than seconds, but when we wake up, we feel we haven't dreamt.
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By definition of dreams, a person dreams only while sleeping. Dreams are happenings that a person appears to watch and experience while sleeping.
Everyone dreams while sleeping, though some people recall their dreams on waking up while others don't.
Dreaming is a result of the activity of the brain. Scientists have found out that while most of the time during sleep the brain is relatively inactive, but when having dreams the activity of the brain increases. This is accompanied by rapid eye movement (REM). If awakened during the REM stage of sleep, a person is quite likely to recall the dreams.
The frequency and duration of REM period varies from person to person. Most adult persons have 3 to 5 REM periods per night, which occur about every 100 minutes, and last from 5 to 30 minutes each.
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