For adults, the Department of Health and Human Services suggests some exercise guidelines - at least 150 minutes a week of moderate aerobic activity or 75 minutes a week of vigorous aerobic activity. You also can do a combination of the two. Exercise is your drug-free treatment for hypertension. Regular physical activity makes your heart stronger. A stronger heart can pump more blood with less effort. But to maintain a healthy BP, you need to keep exercising regularly. It takes about one to three months for exercise to have an impact on your blood pressure.