Motorcycle Racing question?

[Angelica007]

Hi,

I was at a drag competition this past weekend and they had motorcycles up. While some of the riders were racing, they would stick one or both of thier legs out to the sides. I thought they were about to fall off. Why do they do that? Looks crazy to me. I would be afraid my foot would catch the track wrong and jerk me off the bike. Can someone explain, please?