Headphones, earphones, earbuds, and portable audio speakers; portable stereo systems composed of stereo tuners, stereo amplifiers, stereo receivers, and speakers; radio frequency receivers; electronic monitoring devices incorporating microprocessors, digital displays, electronic sensors, and accelerometers, for detecting, storing, reporting, monitoring, and tracking physical activity, sports activity, fitness training, namely, lap-counting devices and pedometers used during sporting activities that communicate such activity with personal computers and/or mobile devices regarding time, pace, speed and recommended activities and goals; downloadable software application for use with an electronic monitoring device, namely, software for reporting, monitoring, and tracking sport, fitness training, and activity data