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).
Normal blood pressure is a measurement of less than 120/80. Hypertension is defined as a reading of 140 over 90 or greater. Those with blood pressure readings between normal blood pressure and high blood pressure are considered to have prehypertension. The researchers measured the men's blood pressure following a 40-minute brisk walking session and four, 10-minute brisk walking bouts.