The Length of Dreams

 Our dreams vary in length: they may last for just a few seconds, and they’ve been known to last for between 20 and 30 minutes. The reason why some dreamers are able to recall their dreams is because they have been woken up whilst in the REM phase of sleep.(2) On average, people have between three and five dreams each night, with some having up to seven; however most of our dreams are quickly forgotten. It seems that our dreams tend to last longer as the night progresses and, when we have a full eight-hour sleep, the majority of our dreams occur in the typical two hours of REM.