Hula hooping is so commonplace that we may overlook some interesting questions it raises: "What keeps a hula hoop up against gravity?" and "Are some body types better for hula hooping than others?" A ...

While using a hula hoop may conjure nostalgic memories of carefree childhood play, this joyful activity actually offers much more than a bit of a giggle. Over the years, hula hooping has become a ...