The idea of finding and raising the Titanic was thought of very soon after the sinking of the vessel. However, the first successful attempt at locating the Titanic Wreck was in 1985 by a French and American expedition led by Jean-Louis Michel and Dr. Robert Ballard.
The higher the pressure, the harder the heart has to pump. Normal adult blood pressure is defined as a blood pressure of 120 mm Hg1 when the heart beats (systolic) and a blood pressure of 80 mm Hg when the heart relaxes (diastolic).
Range. According to MayoClinic.com, a normal blood pressure reading is below 120/80, although some doctors prefer to see readings lower than 115/ 75. Prehypertension occurs when the blood pressure reading is between 121/80 and 139/ 89. High blood pressure is defined as anything above 140/90. Low blood pressure occurs when the reading drops below 90/50.