The Apple iPhone SE is a development of the 5S, taking the same design but refining it slightly with features such as matte edges. It measures 123.8 x 58.6 x 7.6mm and hits the scales at 113g. This means the iPhone SE is slimmer and smaller than the iPhone 5C and the same size as the iPhone 5S.
Both numbers are important to your heart health. A normal blood pressure reading will clock in below 120/80. To put it another way, your systolic will be below 120 and your diastolic will be below 80. (Low blood pressure, called hypotension, occurs when your reading measures lower than 90/60.
Taking blood pressure readings is quick and painless. Usually, the process involves using either a sphygmomanometer or blood pressure machine. Blood pressure is expressed in millimeters of mercury (mmHg) and recorded as two numbers -- systolic pressure over diastolic pressure. For example, the doctor or nurse might say 130 over 80 as a blood pressure reading. This is written as 130/80. While both numbers are important when taking blood pressure, the systolic blood pressure is especially important to be aware of as people grow older.