So, what do these two numbers mean, and how are they different?
Both are good questions. Like they say, knowledge is power. And when it comes to blood pressure, that’s especially true.
In fact, blood pressure is the measurement of the amount of power (aka pressure) that your blood is exerting on your artery walls. That first number (or top number, in written form)—systolic—shows how much pressure is exerted while your heart is beating. The second number (the bottom number in written form)—diastolic—is a measurement of the pressure between beats.