Over 50 million Americans have high blood pressure, that’s almost one in every four people. But a Japanese study offers a way to help reduce the threat of serious problems. Research from Japan shows that only an hour and a half each week could help you out. The study found that 60 to 90 minutes of aerobic exercise in a week lowered systolic blood pressure, the number on top, by twelve points. Examples are jogging, walking or riding a bike. High blood pressure can lead to strokes, heart attacks and kidney failure.