Ключевые слова: active, activity, activity tracker, armband, athlete, athletic, background, black, blue tooth, body, boy, cardio, device, electronic, exercise, fit, fitness, gadget, global positioning system, gps, graphic, health care, human face, jogger, leisure, lifestyle, male, man, recreation, result, review, runner, smart phone, smart watch, sport, technology, teen, teenager, training, watch, wearable, workout, young,