 So I can't really grasp why anybody would get on an actual motorcycle without a helmet. I mean that. Whether you're allowed to or not, I can't grasp why you would take your life in your hands that way. And the studies show that even as low as 20 miles an hour if you're on a motorbike, the head is the heaviest part of the body. It tends to fall forward in motion when you're having an accident. So you tend to break a lot of bones even if you don't kill yourself.