What is Normal Blood Pressure – The Healing Bliss
Blood pressure is expressed in terms of two numbers. The top number is systolic blood pressure. This is the highest pressure and occurs when your heart actually beats. The second number is the diastolic. This reading shows blood pressure when your heart relaxes. Your blood pressure varies throughout the day. It is lower at night and rises shortly before you wake up. It peaks in the middle of the afternoon and then drops in the evening.