National Blood Pressure Month in May provides awareness regarding hypertension. Many people don’t know they have high blood pressure. Symptoms of hypertension often go unnoticed & if uncontrolled the risk of heart problems such as stroke or heart attack increase. It’s important to know your numbers, when blood pressure is measured, the upper number systolic pressure measures the pressure in your arteries when your heart beats. The lower number diastolic pressure measures the pressure between heartbeats.