Random Human Body Facts

    45 facts tagged with Human Body Facts

    Enamel is hardest substance in the human body.
    61
    It takes twice as long to lose new muscle if you stop working out than it did to gain it.
    127
    The human brain doesn't stop developing until about 25 years old.
    102
    Our eyes are always the same size from birth, but our nose and ears never stop growing.
    266
    Your thumb is about the same size as your nose.
    124