Random Human Body Facts

    45 facts tagged with Human Body Facts

    Enamel is hardest substance in the human body.
    61
    Yawns are more contagious among people with closer relationships.
    163
    Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
    92
    It takes about 20 seconds for a red blood cell to circle the whole body.
    102