Final answer:
Regular exercise is important in preventing heart disease as it helps reduce risk factors and improves cardiovascular health.
Step-by-step explanation:
Regular exercise plays a crucial role in preventing heart disease. It helps in reducing various risk factors associated with cardiovascular disease, such as high blood pressure, bad cholesterol, excess body weight, and high total cholesterol. Physical activity also increases the levels of good cholesterol, insulin sensitivity, and the efficiency of the heart. Additionally, exercise promotes the health of blood vessels by reducing plaque formation and lowering blood pressure.