The biomechanical angle of a body joint 11 of a trainee during a given physical activity is continuously monitored and a corresponding audible tracking signal (31, 32, 33, 43, 42, 44) is provided, in real time, to the trainee. This audible tracking signal augments kinematic feedback to the trainee regarding the physical activity and thereby facilitates ease or rapidity of training. In various embodiments, multiple body joints can be monitored, sensitivity of the tracking signal with respect to biomechanical angle excursions can be modified, tracking signals can be recorded for later playback, and a metronome beat can be provided in conjunction with the tracking signal.