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Heart disease has become a serious problem today for numerous adults, taking years away from their lives. Its is the first leading cause of death in America today. There are several risk factors to consider to see if you would be susceptible to having heart attack. On factor would be a lack of exercise daily. Excercise, such as aerobics, increases the cardiac output and speeds up your body metabolic rate. This delivers more oxygen to the tissues of the body causing it to work in a healthier state. Another important factor would be to look at your cholesterol leverl. There are two kinds of proteins that blood fat adheres to. One is LDL, which stands for low-density lipoprotein.The other is HDL, wh