Random Sleep Facts

    42 facts tagged with Sleep Facts

    47% of people have a nightmare at least once a month.
    186
    Bats sleep 18-20 hours per day.
    5
    The harder you concentrate on falling asleep, the less likely you are to fall asleep.
    34
    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
    Lack of water is the #1 trigger of daytime fatigue.
    148
    The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
    15
    A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
    23
    Napping After Learning
    Napping After Learning
    Taking a nap after learning something can help your retention of it.
    54