Random Sleep Facts

    42 facts tagged with Sleep Facts

    Knocker-Up
    Knocker-Up
    Until the 1920s, there was a profession called 'knocker-up', which involved going from client to client and tapping on their windows (or banging on their doors) with long sticks until they woke up.
    46
    A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
    23
    47% of people have a nightmare at least once a month.
    186
    The harder you concentrate on falling asleep, the less likely you are to fall asleep.
    34
    The average cat sleeps about 2/3 of the day.
    203
    You forget 90% of your dreams.
    256
    Sleeping on the job is acceptable in Japan. It is viewed as exhaustion from working hard. Some people fake it to look committed to their job.
    57
    Cows can sleep standing up, but they can only dream lying down.
    745