A base station identifies user-wearable devices being worn by a user, wherein each of the user-wearable devices is battery powered, includes a plurality of sensors, performs wirelessly communication, and is worn on a separate portion of the user's body. For each of the user-wearable devices, the base station identifies a portion of the user's body on which the user-wearable device is being worn. The base station also identifies an activity in which the user is engaged, and identifies multiple types of sensor data to be sensed using the sensors of the user-wearable devices, to enable tracking of metric(s) relevant to the activity in which the user is engaged. The base station determines how to distribute sensing responsibilities for the multiple types of sensor data among the sensors of the user-wearable devices being worn by the user, and selectively activates and deactivates individual sensors of each of the user-wearable devices.