Hermione was going skiing with her parents, something that greatly amused Ron, who had never heard of Muggles strapping narrow strips of wood on to their feet to slide down mountains.
We're strapping human beings on top of rockets with millions of pounds of thrust, hurling them into orbit to go attached to a space station to do world-cutting research. That isn't trivial.
As they resumed their journey, the hired knight dropped back and looked her up and down as if she were a side of good salt pork. " You're a strapping healthy wench, I'd say" .