 And that uses a lot of leg muscle. And it is also a little bit difficult on the hands as well. Most people, when they're first starting, they are gripping the handlebars really, really hard. They're a little nervous. And that just puts a lot of strain on your hands. So the more relaxed you can make your body, the easier it will be on you. And how fast? What's the sort of average speed of, you know, how someone's going at the top speed as they're going down?