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
    In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
    199
    For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
    515
    In one day, adult lungs move about 10,000 litres of air.
    11
    If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
    22
    The adult human brain weighs about 3 pounds (1,300-1,400 g).
    99
    The human brain doesn't stop developing until about 25 years old.
    102
    The average sperm cell swims at 8 inches per hour.
    76