It's not work, it's called pit bitch. It's sort of like umbrella girl, except you don't have to be attractive. Most of the good pit bitches have been claimed by the fast riders, but you might be lucky enough to find a novice racer who will let you put the bike on stands, put warmers on and pull them, and things like that. It's not expected, but pit bitches often make us lunches like sammiches, and more experienced pit bitches will provide hot lunches like grilling hamburgers or hot dogs.