Building blocks of Exergame genre?

Ian Bogost from Georgia Institute of Technology proclaimed that: "Those interested in exergames should be particularly interested in establishing new ritual practices unique to videogames. Guitar Hero and Wii Sports are successful examples of ritual-bound physical games, but they borrow their rituals entirely from other domains. "

Social rituals might be just what is needed but I think this comment also highlights the variety of important issues when building up a new game genre or form of sport. What type of activity exergaming is anyway. Should we consider exergames as games or novel type of physical activity? What type of social rituals will create exergame culture?

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