1. A physical activity monitoring system comprising: a communications network; a wearable sensor device configured to generate physiologic data associated with a sensed physiologic condition of a wearer, and to generate audio context data associated with a sensed audio context of the wearer, and to form a communication link with the communications network; a memory for storing the physiologic data and the audio context data; a computer and a computer program executed by the computer, wherein the computer program comprises computer instructions for rendering activity data associated with the physiologic data and the audio context data; and a user interface operably connected to the computer for rendering the activity data.