Hi, I am 24 and jog from 2km - 5km a day. I am 5'6 3/4 inches and weigh 155 pounds in the morning. I recently had been having episodes of high blood pressure. ranging from 130/80 -160/90. I drink lots of water a day, may be 3 liters. I recently had a treadmill stress test and stopped at level 5 for 1 min under advise of the attending doctors since my BP level was high even if my maximum heart rate hasn't been achieved. My salt intake is just moderate and after these episodes, I have reduced them to minimum to the extent of avoiding pork and beef. My question is, how long before I can decrease my Blood Pressure. I am currently taking DILTIAZEM HCI. Also, could this be caused by stress as I am currently undergoing examinations for PILOT training.