Random Body Facts

    64 facts tagged with Body Facts

    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
    The average sperm cell swims at 8 inches per hour.
    76
    Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
    24
    In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
    22
    In one day, adult lungs move about 10,000 litres of air.
    11
    The average person's skin weighs twice as much as their brain.
    131
    In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
    130
    The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
    8