I was surprised at how much of a work out it is. The class was only an hour but I must say I did break a serious sweat at one point.
I know it seems a bit pointless to try to show hula hooping through photos but hey ho, why not throw a few in anyway. If I could make gifs I would have, but they would only have shown it falling to the ground, many many times.
I would definitely recommend it if you're looking for a new hobby to take up and don't mind being bruised all over!