Ключевые слова: active, activity, adult, aid, analysis, background, blood, cardiac, care, check, checking, closeup, device, digital, electronic, equipment, exercise, fitness, gadget, hands, health, healthy, heart, lifestyle, male, man, measuring, medicine, modern, monitor, nature, outdoors, person, pressure, pulse, rate, recreation, rhythm, runner, speed, sport, sports, tempo, test, track, train, wellness, workout, young,