[QUOTE=jessmarimba;540643]Eesh, I have no idea? I've only seen it on tv. Does one involve less upper-body twisting than the other?[/
Neither one involves UB twisting...although skate skiing if you are not used to it (proper form) can cause you to twist espec if you get off balance which is easy to do. Classic involves good form as well to do it efficiently, however it is less risky with twisting your back. Let me know and maybe we can meet up this winter.

