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
    Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
    22
    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
    Hypnic Jerk
    Hypnic Jerk
    When you wake up with a jolt, it's called a Hypnic Jerk. This usually happens during the lightest stages of sleep, and can happen as a natural reaction when you fall asleep in a car or airplane.
    35
    Honeybees never sleep.
    276
    There's a love mattress that is specifically designed for couples who sleep on each other's arms.
    12
    A new baby usually deprives each of it's parents around 350-400 hours of sleep in the first year. That is one entire nights sleep per week, per parent.
    194
    One reason that kittens sleep so much is because a growth hormone is released only during sleep.
    212