Beets are rich in natural chemicals called nitrates. Through a chain reaction, your body changes nitrates into nitric oxide, which helps with blood flow and blood pressure. Beet juice may boost stamina, improve blood flow, and help lower blood pressure.Health Benefits of Beet JuiceHelps lower blood pressure. Beet juice may help lower your blood pressure. ...Improves exercise stamina. ...May improve muscle power in people with heart failure. ...May slow the progression of dementia. ...Helps you maintain a healthy weight. ...May prevent cancer. ...Good source of potassium. ...Good source of other minerals.