Cardiovascular diseases are the most important causes of death in the world today. In adults, the most frequent heart disease is acute myocardial infarction, which can lead to sudden death. To prevent these diseases we need to fight against their main risk factors, which include smoking, lipid disorders, hypertension, diabetes and a sedentary life-style, among others. It has been demonstrated that physical exercise or sports at any age provide notable benefits and can help to decrease other risk factors and reduce the incidence of cardio- vascular diseases. Exercise can be simply walking or...