 [ Symptoms ] what is normal blood pressure i started on an exercise program about three months ago i am on high bp meds now i notice my bp is usually 11556 66 i also feel really uncomfortable and dizzy when i stand up is it too low now used to be 130 14075 85 [ Disease ] hi your blood pressure rises with each heartbeat and falls when your heart relaxes between beats while bp can change from minute to minute with changes in posture exercise stress or sleep it should normally be less than 12080 mm hg less than 120 systolic and less than 80 diastolic for an adult age 20 or over good luck