Yes, one woman can hula with up to 200 (200?!) different hoops. And that’s not easy: “A quick primer on the physics of this stuff: For a Hula-Hoop to continue spinning, one must apply force to the hoop in both the fore-aft and up-down directions. ‘The Hula-Hoop stays aloft thanks to conservation of angular momentum, but the system is extremely unstable—one little hiccup, and the hoop comes tumbling down.'” – Wired