An on-body hula hoop should measure vertically from the floor to your navel or the top of your hip bone. Meanwhile, if you have a larger body size, experts recommend going for a slightly bigger hoop. Likewise, for smaller body sizes, a smaller hoop works the best. Here the calculations work as; heavier and bigger the hoop, the slower it will spin, giving you more time to connect with it on the waist. Smaller hula hoops are more challenging on the body as they offer faster spins, whereas smaller and lightweight hoops are not ideal for waist hooping.