Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) High Blood Pressure ?
    ### Response:
    Abnormal blood pressure is higher than 120/80 mmHg. If either your systolic or diastolic blood pressure is higher than normal (120/80) but not high enough to be considered high blood pressure (140/90), you have pre-hypertension. Pre-hypertension is a top number between 120 and 139 or a bottom number between 80 and 89 mmHg.
    