Ключевые слова: analysis, attack, beans, beat, blood, caffeine, cardiac, cardio, cardiogram, cardiograph, cardiologist, cardiology, chart, cholesterol, coffee, curve, diagnosis, disease, drink, ecg, effect, electrocardiogram, energy, experiment, frequency, health, healthcare, healthy, heart, heartbeat, hospital, illustration, life, lifestyle, living, medical, medicine, monitor, patient, pulse, result, roasted, shape, signal, stimulant, stress, symbol, vitality, wave,