Random Sleep Facts

    42 facts tagged with Sleep Facts

    Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
    15
    One reason that kittens sleep so much is because a growth hormone is released only during sleep.
    212
    Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
    29
    Bats sleep 18-20 hours per day.
    5
    The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
    15
    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
    Cats and sleep
    Cats and sleep
    On average, cats sleep for 2/3 of their life. This would mean that a 9 year old cat has been asleep for 6 years.
    29
    Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
    149