Ключевые слова: adult, agony, angina, attack, background, cardiac, cardiogram, cardiology, caucasian, chest, condition, cough, disease, fit, hands, health, heart, heartache, heartburn, illness, indigestion, intestine, isolated, male, man, medical, muscular, pain, palm, palpitation, people, person, problem, punch, recreation, recreational, shape, sickness, sports, stomach, strength, stress, sudden, suffering, training, unhealthy, white, worried, young, young adult,