Exercise strengthens the heart and opens the blood vessels so the circulatory system can pump blood with less effort. It also encourages weight loss that further reduces blood pressure. High blood pressure is associated with a variety of chronic health conditions that occur with age, like heart disease, diabetes, strokes, and dementia, which means lowering blood pressure can help seniors prevent these dangerous conditions. Exercise is so effective at lowering blood pressure that some doctors allow you to stop taking blood pressure medication after they start exercising.