(a device that produces a click at a regular interval) to dictate the rhythm. In this context, it implies that the activity must stay perfectly in sync with an increasing or steady BPM (beats per minute).
Using a steady beat to regulate stimulation. This can be used to either build intensity quickly or to maintain a "steady state" just below the point of climax. Edging (Orgasm Control): high speed masturbation marathon metronomic edition top