Exercise helps reduce your blood pressure, in part, by attacking the plaque in your arteries. As the arteries widen, the blood flows through more freely, and your blood pressure eventually starts to drop. Hypertension also decreases as the result of exercise because your heart, a muscle, is getting a workout. The stronger your heart muscle gets, the greater its ability to pump blood through the arteries, which also helps to reduce your blood pressure. 3. Lowers Type 2 diabetes risk.