The term "120/80" refers to a standard measurement of blood pressure, expressed in millimeters of mercury (mmHg). The first number, 120, represents the systolic pressure, which is the pressure in the arteries when the heart beats. The second number, 80, indicates the diastolic pressure, which is the pressure in the arteries when the heart is at rest between beats. A blood pressure reading of 120/80 is often considered normal and healthy for adults. Maintaining blood pressure within this range is important for overall cardiovascular health, as high or low blood pressure can lead to various health issues, including heart disease and stroke.