My husband is 68 years old, non smoker, does not drink, working as supervisor of a construction plan, never had heart problem an little overweight. Recently his blood preasure was around 146 and missed work saying not feeling good. I took him to the Eisenhower hospital, emegency. Doctors examin him and by then it went up to 180. He is on medication and sodium diet. I watch what he eats and drinks lots of water . My question is WHY HIS BLOOD PREASURE GOES UP EARLY IN THE MORNING LIKE BOUT 4AM. Thank you very much