Question: what is the average normal blood pressure reading for healthy adults?
Answer: The bottom number is the diastolic blood pressure, which is the force as your heart relaxes. These are the standard classifications for normal and high blood pressure. Normal blood pressure: 90/60 to under 120/80 mm Hg. Prehypertension, or risk for hypertension: 120-139/80-89 mm Hg.