A method is disclosed including receiving from a user a request to associate an avatar in a computer-implemented virtual world with a wearable device, creating an association between the avatar and the wearable device in response to the request, and receiving from the wearable device activity metric data for the user generated by a sensor of the wearable device. The activity metric data is generated by the wearable device in response to the wearable device sensing the user performing an activity. The method further including determining based on the received activity metric data a type of the sensed activity, determining at least one attribute of the avatar that corresponds to the determined type of the activity, determining an amount to adjust the at least one attribute based on the received activity metric data, and adjusting the determined at least one attribute of the avatar by the determined amount.
