Ключевые слова: ache, adult, anxiety, attack, background, breathing, care, casual, chest, chest pain, coronary, depressed, disease, disorder, elderly, emotion, frustrated, frustration, grandfather, heart, heart attack, heart disease, hurt, ill, ischemic, isolated, lung, man, mature, medical, old, pain, people, person, pressure, problem, retired, senior, sick, sickness, sport, sport man, stressed, suffering, tired, unhappy, unhealthy, unwell,