What is blood pressure and hypertension?

Blood pressure is the pressure of blood pushing against the walls of your arteries. High blood pressure, also called hypertension, is blood pressure that is higher than normal. Your blood pressure changes throughout the day based on your activities. Having blood pressure measures consistently above normal may result in a diagnosis of high blood pressure (or hypertension). It's important to take care of yourself and your health by checking your blood pressure daily, taking medicine on time, and exercising.